2120212101 has 8 divisors (see below), whose sum is σ = 3230799424. Its totient is φ = 1211549760.

The previous prime is 2120212097. The next prime is 2120212139. The reversal of 2120212101 is 1012120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120212101 - 2² = 2120212097 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 (2120210101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50481220 + ... + 50481261.

It is an arithmetic number, because the mean of its divisors is an integer number (403849928).

Almost surely, 2^2120212101 is an apocalyptic number.

2120212101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2120212101 is a deficient number, since it is larger than the sum of its proper divisors (1110587323).

2120212101 is a wasteful number, since it uses less digits than its factorization.

2120212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100962491.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2120212101 is about 46045.7609449556. The cubic root of 2120212101 is about 1284.6744977397.

Adding to 2120212101 its reverse (1012120212), we get a palindrome (3132332313).

It can be divided in two parts, 2120212 and 101, that multiplied together give a palindrome (214141412).

The spelling of 2120212101 in words is "two billion, one hundred twenty million, two hundred twelve thousand, one hundred one".