1022400205951 has 2 divisors, whose sum is σ = 1022400205952. Its totient is φ = 1022400205950.

The previous prime is 1022400205861. The next prime is 1022400205991. The reversal of 1022400205951 is 1595020042201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022400205951 - 2¹⁵ = 1022400173183 is a prime.

It is a super-2 number, since 2×1022400205951² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022400205991) 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, 511200102975 + 511200102976.

It is an arithmetic number, because the mean of its divisors is an integer number (511200102976).

Almost surely, 2^{1022400205951} is an apocalyptic number.

1022400205951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022400205951 is an equidigital number, since it uses as much as digits as its factorization.

1022400205951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 1022400205951 in words is "one trillion, twenty-two billion, four hundred million, two hundred five thousand, nine hundred fifty-one".