21110201011051 has 2 divisors, whose sum is σ = 21110201011052. Its totient is φ = 21110201011050.

The previous prime is 21110201010989. The next prime is 21110201011057. The reversal of 21110201011051 is 15011010201112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110201011051 - 2¹³ = 21110201002859 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110201011057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555100505525 + 10555100505526.

It is an arithmetic number, because the mean of its divisors is an integer number (10555100505526).

Almost surely, 2^{21110201011051} is an apocalyptic number.

21110201011051 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110201011051 is an equidigital number, since it uses as much as digits as its factorization.

21110201011051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 21110201011051 its reverse (15011010201112), we get a palindrome (36121211212163).

The spelling of 21110201011051 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, eleven thousand, fifty-one".