21010011012210 has 32 divisors (see below), whose sum is σ = 55008028832832. Its totient is φ = 5093336002880.

The previous prime is 21010011012197. The next prime is 21010011012239. The reversal of 21010011012210 is 1221011001012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31833349689 + ... + 31833350348.

It is an arithmetic number, because the mean of its divisors is an integer number (1719000901026).

Almost surely, 2^{21010011012210} is an apocalyptic number.

21010011012210 is an abundant number, since it is smaller than the sum of its proper divisors (33998017820622).

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

21010011012210 is a wasteful number, since it uses less digits than its factorization.

21010011012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63666700058.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21010011012210 its reverse (1221011001012), we get a palindrome (22231022013222).

The spelling of 21010011012210 in words is "twenty-one trillion, ten billion, eleven million, twelve thousand, two hundred ten".