1251421014029 has 2 divisors, whose sum is σ = 1251421014030. Its totient is φ = 1251421014028.

The previous prime is 1251421013951. The next prime is 1251421014089. The reversal of 1251421014029 is 9204101241521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1172390872900 + 79030141129 = 1082770^2 + 281123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251421014029 - 2²⁸ = 1251152578573 is a prime.

It is a super-2 number, since 2×1251421014029² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1251421013986 and 1251421014004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251421014089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625710507014 + 625710507015.

It is an arithmetic number, because the mean of its divisors is an integer number (625710507015).

Almost surely, 2^{1251421014029} is an apocalyptic number.

It is an amenable number.

1251421014029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251421014029 is an equidigital number, since it uses as much as digits as its factorization.

1251421014029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 1251421014029 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-one million, fourteen thousand, twenty-nine".