21210200011051 has 2 divisors, whose sum is σ = 21210200011052. Its totient is φ = 21210200011050.

The previous prime is 21210200010971. The next prime is 21210200011069. The reversal of 21210200011051 is 15011000201212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21210200011051 - 2²³ = 21210191622443 is a prime.

It is not a weakly prime, because it can be changed into another prime (21210209011051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605100005525 + 10605100005526.

It is an arithmetic number, because the mean of its divisors is an integer number (10605100005526).

Almost surely, 2^{21210200011051} is an apocalyptic number.

21210200011051 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210200011051 is an equidigital number, since it uses as much as digits as its factorization.

21210200011051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 21210200011051 its reverse (15011000201212), we get a palindrome (36221200212263).

The spelling of 21210200011051 in words is "twenty-one trillion, two hundred ten billion, two hundred million, eleven thousand, fifty-one".