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2020221212101 = 10491925854349
BaseRepresentation
bin11101011001011110100…
…100010101010111000101
321011010112200121212011121
4131121132210111113011
5231044403112241401
64144024331433541
7265645651654141
oct35313644252705
97133480555147
102020221212101
11709853230824
12287647bb58b1
13118676a12331
146daca2ba221
153783d392ca1
hex1d65e9155c5

2020221212101 has 4 divisors (see below), whose sum is σ = 2022147067500. Its totient is φ = 2018295356704.

The previous prime is 2020221212083. The next prime is 2020221212111. The reversal of 2020221212101 is 1012121220202.

Adding to 2020221212101 its reverse (1012121220202), we get a palindrome (3032342432303).

It can be divided in two parts, 2020221 and 212101, that added together give a palindrome (2232322).

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1929696048225 + 90525163876 = 1389135^2 + 300874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020221212101 - 25 = 2020221212069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020221212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962926126 + ... + 962928223.

It is an arithmetic number, because the mean of its divisors is an integer number (505536766875).

Almost surely, 22020221212101 is an apocalyptic number.

It is an amenable number.

2020221212101 is a deficient number, since it is larger than the sum of its proper divisors (1925855399).

2020221212101 is a wasteful number, since it uses less digits than its factorization.

2020221212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925855398.

The product of its (nonzero) digits is 64, while the sum is 16.

The spelling of 2020221212101 in words is "two trillion, twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred one".

Divisors: 1 1049 1925854349 2020221212101