20200101002121 has 96 divisors (see below), whose sum is σ = 28815029489664. Its totient is φ = 12570640992000.

The previous prime is 20200101002113. The next prime is 20200101002143. The reversal of 20200101002121 is 12120010100202.

It is not a de Polignac number, because 20200101002121 - 2³ = 20200101002113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200101002097 and 20200101002106.

It is not an unprimeable number, because it can be changed into a prime (20200101002171) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6378306280 + ... + 6378309446.

It is an arithmetic number, because the mean of its divisors is an integer number (300156557184).

Almost surely, 2^{20200101002121} is an apocalyptic number.

It is an amenable number.

20200101002121 is a deficient number, since it is larger than the sum of its proper divisors (8614928487543).

20200101002121 is a wasteful number, since it uses less digits than its factorization.

20200101002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583 (or 3482 counting only the distinct ones).

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

Adding to 20200101002121 its reverse (12120010100202), we get a palindrome (32320111102323).

The spelling of 20200101002121 in words is "twenty trillion, two hundred billion, one hundred one million, two thousand, one hundred twenty-one".