1251122014531 has 2 divisors, whose sum is σ = 1251122014532. Its totient is φ = 1251122014530.

The previous prime is 1251122014517. The next prime is 1251122014559. The reversal of 1251122014531 is 1354102211521.

It is an a-pointer prime, because the next prime (1251122014559) can be obtained adding 1251122014531 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251122014531 - 2²¹ = 1251119917379 is a prime.

It is a super-2 number, since 2×1251122014531² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1251122014531.

It is not a weakly prime, because it can be changed into another prime (1251122014561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625561007265 + 625561007266.

It is an arithmetic number, because the mean of its divisors is an integer number (625561007266).

Almost surely, 2^{1251122014531} is an apocalyptic number.

1251122014531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251122014531 is an equidigital number, since it uses as much as digits as its factorization.

1251122014531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 1251122014531 in words is "one trillion, two hundred fifty-one billion, one hundred twenty-two million, fourteen thousand, five hundred thirty-one".