20111001000012 has 36 divisors (see below), whose sum is σ = 54746613834640. Its totient is φ = 6188000307552.

The previous prime is 20111000999989. The next prime is 20111001000031. The reversal of 20111001000012 is 21000010011102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20111001000012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20111000999958 and 20111001000003.

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 11 ways as a sum of consecutive naturals, for example, 21486111712 + ... + 21486112647.

Almost surely, 2^{20111001000012} is an apocalyptic number.

It is an amenable number.

20111001000012 is an abundant number, since it is smaller than the sum of its proper divisors (34635612834628).

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

20111001000012 is a wasteful number, since it uses less digits than its factorization.

20111001000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42972224382 (or 42972224377 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20111001000012 its reverse (21000010011102), we get a palindrome (41111011011114).

The spelling of 20111001000012 in words is "twenty trillion, one hundred eleven billion, one million, twelve", and thus it is an aban number.