2100042098951 has 2 divisors, whose sum is σ = 2100042098952. Its totient is φ = 2100042098950.

The previous prime is 2100042098911. The next prime is 2100042098953. The reversal of 2100042098951 is 1598902400012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100042098951 - 2⁶ = 2100042098887 is a prime.

Together with 2100042098953, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100042098899 and 2100042098908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100042098953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050021049475 + 1050021049476.

It is an arithmetic number, because the mean of its divisors is an integer number (1050021049476).

Almost surely, 2^{2100042098951} is an apocalyptic number.

2100042098951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100042098951 is an equidigital number, since it uses as much as digits as its factorization.

2100042098951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

Adding to 2100042098951 its reverse (1598902400012), we get a palindrome (3698944498963).

The spelling of 2100042098951 in words is "two trillion, one hundred billion, forty-two million, ninety-eight thousand, nine hundred fifty-one".