20001212011212 has 24 divisors (see below), whose sum is σ = 47036971032576. Its totient is φ = 6614574050448.

The previous prime is 20001212011199. The next prime is 20001212011273. The reversal of 20001212011212 is 21211021210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001212011191 and 20001212011200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6562075908 + ... + 6562078955.

It is an arithmetic number, because the mean of its divisors is an integer number (1959873793024).

Almost surely, 2^{20001212011212} is an apocalyptic number.

It is an amenable number.

20001212011212 is an abundant number, since it is smaller than the sum of its proper divisors (27035759021364).

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

20001212011212 is a wasteful number, since it uses less digits than its factorization.

20001212011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13124154997 (or 13124154995 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20001212011212 its reverse (21211021210002), we get a palindrome (41212233221214).

The spelling of 20001212011212 in words is "twenty trillion, one billion, two hundred twelve million, eleven thousand, two hundred twelve".