2101212102151 has 2 divisors, whose sum is σ = 2101212102152. Its totient is φ = 2101212102150.

The previous prime is 2101212102139. The next prime is 2101212102161. The reversal of 2101212102151 is 1512012121012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101212102151 - 2²⁵ = 2101178547719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101212102161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050606051075 + 1050606051076.

It is an arithmetic number, because the mean of its divisors is an integer number (1050606051076).

Almost surely, 2^{2101212102151} is an apocalyptic number.

2101212102151 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101212102151 is an equidigital number, since it uses as much as digits as its factorization.

2101212102151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 2101212102151 its reverse (1512012121012), we get a palindrome (3613224223163).

The spelling of 2101212102151 in words is "two trillion, one hundred one billion, two hundred twelve million, one hundred two thousand, one hundred fifty-one".