20100312122 has 64 divisors (see below), whose sum is σ = 34778315520. Its totient is φ = 8695582720.

The previous prime is 20100312109. The next prime is 20100312131. The reversal of 20100312122 is 22121300102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20100312097 and 20100312106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14264954 + ... + 14266362.

It is an arithmetic number, because the mean of its divisors is an integer number (543411180).

Almost surely, 2^20100312122 is an apocalyptic number.

20100312122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20100312122 is a deficient number, since it is larger than the sum of its proper divisors (14678003398).

20100312122 is a wasteful number, since it uses less digits than its factorization.

20100312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20100312122 its reverse (22121300102), we get a palindrome (42221612224).

The spelling of 20100312122 in words is "twenty billion, one hundred million, three hundred twelve thousand, one hundred twenty-two".