401421012127 has 2 divisors, whose sum is σ = 401421012128. Its totient is φ = 401421012126.

The previous prime is 401421012103. The next prime is 401421012131. The reversal of 401421012127 is 721210124104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401421012127 - 2²³ = 401412623519 is a prime.

It is a super-2 number, since 2×401421012127² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401421012827) 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, 200710506063 + 200710506064.

It is an arithmetic number, because the mean of its divisors is an integer number (200710506064).

Almost surely, 2^401421012127 is an apocalyptic number.

401421012127 is a deficient number, since it is larger than the sum of its proper divisors (1).

401421012127 is an equidigital number, since it uses as much as digits as its factorization.

401421012127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The spelling of 401421012127 in words is "four hundred one billion, four hundred twenty-one million, twelve thousand, one hundred twenty-seven".