20112212010121 has 48 divisors (see below), whose sum is σ = 27025409011392. Its totient is φ = 14749248998400.

The previous prime is 20112212010113. The next prime is 20112212010181. The reversal of 20112212010121 is 12101021221102.

It is not a de Polignac number, because 20112212010121 - 2³ = 20112212010113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112212010095 and 20112212010104.

It is not an unprimeable number, because it can be changed into a prime (20112212010181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245316666 + ... + 245398636.

It is an arithmetic number, because the mean of its divisors is an integer number (563029354404).

Almost surely, 2^{20112212010121} is an apocalyptic number.

It is an amenable number.

20112212010121 is a deficient number, since it is larger than the sum of its proper divisors (6913197001271).

20112212010121 is a wasteful number, since it uses less digits than its factorization.

20112212010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108790 (or 108783 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20112212010121 its reverse (12101021221102), we get a palindrome (32213233231223).

The spelling of 20112212010121 in words is "twenty trillion, one hundred twelve billion, two hundred twelve million, ten thousand, one hundred twenty-one".