21210120130012 has 12 divisors (see below), whose sum is σ = 40492047521016. Its totient is φ = 9640963695440.

The previous prime is 21210120129977. The next prime is 21210120130057. The reversal of 21210120130012 is 21003102101212.

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, 241024092343 + ... + 241024092430.

It is an arithmetic number, because the mean of its divisors is an integer number (3374337293418).

Almost surely, 2^{21210120130012} is an apocalyptic number.

21210120130012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21210120130012 is a deficient number, since it is larger than the sum of its proper divisors (19281927391004).

21210120130012 is a wasteful number, since it uses less digits than its factorization.

21210120130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482048184788 (or 482048184786 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21210120130012 its reverse (21003102101212), we get a palindrome (42213222231224).

The spelling of 21210120130012 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty million, one hundred thirty thousand, twelve".