21211524141051 has 16 divisors (see below), whose sum is σ = 28710327600000. Its totient is φ = 13926959204928.

The previous prime is 21211524141013. The next prime is 21211524141061. The reversal of 21211524141051 is 15014142511212.

It is a happy number.

It is not a de Polignac number, because 21211524141051 - 2⁶ = 21211524140987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21211524141061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10415301 + ... + 12284198.

It is an arithmetic number, because the mean of its divisors is an integer number (1794395475000).

Almost surely, 2^{21211524141051} is an apocalyptic number.

21211524141051 is a deficient number, since it is larger than the sum of its proper divisors (7498803458949).

21211524141051 is a wasteful number, since it uses less digits than its factorization.

21211524141051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22704218.

The product of its (nonzero) digits is 3200, while the sum is 30.

Adding to 21211524141051 its reverse (15014142511212), we get a palindrome (36225666652263).

The spelling of 21211524141051 in words is "twenty-one trillion, two hundred eleven billion, five hundred twenty-four million, one hundred forty-one thousand, fifty-one".