21201011120012 has 12 divisors (see below), whose sum is σ = 37155462329496. Its totient is φ = 10585164740160.

The previous prime is 21201011119973. The next prime is 21201011120021. The reversal of 21201011120012 is 21002111010212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835201853 + ... + 3835207380.

It is an arithmetic number, because the mean of its divisors is an integer number (3096288527458).

Almost surely, 2^{21201011120012} is an apocalyptic number.

It is an amenable number.

21201011120012 is a deficient number, since it is larger than the sum of its proper divisors (15954451209484).

21201011120012 is a wasteful number, since it uses less digits than its factorization.

21201011120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7670409928 (or 7670409926 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21201011120012 its reverse (21002111010212), we get a palindrome (42203122130224).

The spelling of 21201011120012 in words is "twenty-one trillion, two hundred one billion, eleven million, one hundred twenty thousand, twelve".