20011212431112 has 64 divisors (see below), whose sum is σ = 57525658951680. Its totient is φ = 5682412636992.

The previous prime is 20011212431059. The next prime is 20011212431123. The reversal of 20011212431112 is 21113421211002.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 365354088 + ... + 365408855.

It is an arithmetic number, because the mean of its divisors is an integer number (898838421120).

Almost surely, 2^{20011212431112} is an apocalyptic number.

It is an amenable number.

20011212431112 is an abundant number, since it is smaller than the sum of its proper divisors (37514446520568).

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

20011212431112 is a wasteful number, since it uses less digits than its factorization.

20011212431112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730763122 (or 730763118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 20011212431112 its reverse (21113421211002), we get a palindrome (41124633642114).

The spelling of 20011212431112 in words is "twenty trillion, eleven billion, two hundred twelve million, four hundred thirty-one thousand, one hundred twelve".