2100211022251 has 2 divisors, whose sum is σ = 2100211022252. Its totient is φ = 2100211022250.

The previous prime is 2100211022249. The next prime is 2100211022303. The reversal of 2100211022251 is 1522201120012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100211022251 - 2¹ = 2100211022249 is a prime.

Together with 2100211022249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2100211092251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050105511125 + 1050105511126.

It is an arithmetic number, because the mean of its divisors is an integer number (1050105511126).

Almost surely, 2^{2100211022251} is an apocalyptic number.

2100211022251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100211022251 is an equidigital number, since it uses as much as digits as its factorization.

2100211022251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 2100211022251 its reverse (1522201120012), we get a palindrome (3622412142263).

The spelling of 2100211022251 in words is "two trillion, one hundred billion, two hundred eleven million, twenty-two thousand, two hundred fifty-one".