20101102211051 has 2 divisors, whose sum is σ = 20101102211052. Its totient is φ = 20101102211050.

The previous prime is 20101102211033. The next prime is 20101102211081. The reversal of 20101102211051 is 15011220110102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20101102211051 - 2¹⁰ = 20101102210027 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101102211081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050551105525 + 10050551105526.

It is an arithmetic number, because the mean of its divisors is an integer number (10050551105526).

Almost surely, 2^{20101102211051} is an apocalyptic number.

20101102211051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101102211051 is an equidigital number, since it uses as much as digits as its factorization.

20101102211051 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 17.

Adding to 20101102211051 its reverse (15011220110102), we get a palindrome (35112322321153).

The spelling of 20101102211051 in words is "twenty trillion, one hundred one billion, one hundred two million, two hundred eleven thousand, fifty-one".