101001020021101 has 4 divisors (see below), whose sum is σ = 101001199697532. Its totient is φ = 101000840344672.

The previous prime is 101001020021081. The next prime is 101001020021137. The reversal of 101001020021101 is 101120020100101.

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 67240574001225 + 33760446019876 = 8200035^2 + 5810374^2 .

It is a cyclic number.

It is not a de Polignac number, because 101001020021101 - 2¹³ = 101001020012909 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 (101001020021701) 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, 88992370 + ... + 90120163.

It is an arithmetic number, because the mean of its divisors is an integer number (25250299924383).

Almost surely, 2^{101001020021101} is an apocalyptic number.

It is an amenable number.

101001020021101 is a deficient number, since it is larger than the sum of its proper divisors (179676431).

101001020021101 is an equidigital number, since it uses as much as digits as its factorization.

101001020021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179676430.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101001020021101 its reverse (101120020100101), we get a palindrome (202121040121202).

The spelling of 101001020021101 in words is "one hundred one trillion, one billion, twenty million, twenty-one thousand, one hundred one".