21010120012211 has 32 divisors (see below), whose sum is σ = 24334906464000. Its totient is φ = 17927331143680.

The previous prime is 21010120012157. The next prime is 21010120012307. The reversal of 21010120012211 is 11221002101012.

It is a cyclic number.

It is not a de Polignac number, because 21010120012211 - 2²² = 21010115817907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010120011211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166099556 + ... + 166225998.

It is an arithmetic number, because the mean of its divisors is an integer number (760465827000).

Almost surely, 2^{21010120012211} is an apocalyptic number.

21010120012211 is a deficient number, since it is larger than the sum of its proper divisors (3324786451789).

21010120012211 is a wasteful number, since it uses less digits than its factorization.

21010120012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128899.

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

Adding to 21010120012211 its reverse (11221002101012), we get a palindrome (32231122113223).

The spelling of 21010120012211 in words is "twenty-one trillion, ten billion, one hundred twenty million, twelve thousand, two hundred eleven".