20101211012112 has 40 divisors (see below), whose sum is σ = 52907904463104. Its totient is φ = 6573980959104.

The previous prime is 20101211012107. The next prime is 20101211012149. The reversal of 20101211012112 is 21121011210102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20101211012091 and 20101211012100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3950707168 + ... + 3950712255.

Almost surely, 2^{20101211012112} is an apocalyptic number.

It is an amenable number.

20101211012112 is an abundant number, since it is smaller than the sum of its proper divisors (32806693450992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101211012112 is a wasteful number, since it uses less digits than its factorization.

20101211012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901419487 (or 7901419481 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20101211012112 its reverse (21121011210102), we get a palindrome (41222222222214).

The spelling of 20101211012112 in words is "twenty trillion, one hundred one billion, two hundred eleven million, twelve thousand, one hundred twelve".