20202100121 has 8 divisors (see below), whose sum is σ = 23347532160. Its totient is φ = 17121522528.

The previous prime is 20202100103. The next prime is 20202100133. The reversal of 20202100121 is 12100120202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20202100121 - 2²² = 20197905817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202100141) 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, 16212941 + ... + 16214186.

It is an arithmetic number, because the mean of its divisors is an integer number (2918441520).

Almost surely, 2^20202100121 is an apocalyptic number.

It is an amenable number.

20202100121 is a deficient number, since it is larger than the sum of its proper divisors (3145432039).

20202100121 is an equidigital number, since it uses as much as digits as its factorization.

20202100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32427223.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20202100121 its reverse (12100120202), we get a palindrome (32302220323).

The spelling of 20202100121 in words is "twenty billion, two hundred two million, one hundred thousand, one hundred twenty-one".