20012112122 has 32 divisors (see below), whose sum is σ = 32231872512. Its totient is φ = 9285663744.

The previous prime is 20012112101. The next prime is 20012112149. The reversal of 20012112122 is 22121121002.

It is a junction number, because it is equal to n+sod(n) for n = 20012112097 and 20012112106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689618 + ... + 718050.

It is an arithmetic number, because the mean of its divisors is an integer number (1007246016).

Almost surely, 2^20012112122 is an apocalyptic number.

20012112122 is a deficient number, since it is larger than the sum of its proper divisors (12219760390).

20012112122 is a wasteful number, since it uses less digits than its factorization.

20012112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28742.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012112122 its reverse (22121121002), we get a palindrome (42133233124).

The spelling of 20012112122 in words is "twenty billion, twelve million, one hundred twelve thousand, one hundred twenty-two".