21001311310012 has 12 divisors (see below), whose sum is σ = 40093412501016. Its totient is φ = 9546050595440.

The previous prime is 21001311309947. The next prime is 21001311310093.

It is a happy number.

21001311310012 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238651264843 + ... + 238651264930.

It is an arithmetic number, because the mean of its divisors is an integer number (3341117708418).

Almost surely, 2^{21001311310012} is an apocalyptic number.

21001311310012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21001311310012 is a deficient number, since it is larger than the sum of its proper divisors (19092101191004).

21001311310012 is a wasteful number, since it uses less digits than its factorization.

21001311310012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477302529788 (or 477302529786 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

It can be divided in two parts, 2100131 and 1310012, that added together give a palindrome (3410143).

The spelling of 21001311310012 in words is "twenty-one trillion, one billion, three hundred eleven million, three hundred ten thousand, twelve".