1012197902951 has 2 divisors, whose sum is σ = 1012197902952. Its totient is φ = 1012197902950.

The previous prime is 1012197902917. The next prime is 1012197902981. The reversal of 1012197902951 is 1592097912101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012197902951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012197902896 and 1012197902905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012197902981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506098951475 + 506098951476.

It is an arithmetic number, because the mean of its divisors is an integer number (506098951476).

Almost surely, 2^{1012197902951} is an apocalyptic number.

1012197902951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012197902951 is an equidigital number, since it uses as much as digits as its factorization.

1012197902951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 47.

The spelling of 1012197902951 in words is "one trillion, twelve billion, one hundred ninety-seven million, nine hundred two thousand, nine hundred fifty-one".