400501051122021 has 32 divisors (see below), whose sum is σ = 546919290777600. Its totient is φ = 260574471702720.

The previous prime is 400501051121957. The next prime is 400501051122031. The reversal of 400501051122021 is 120221150105004.

It is a happy number.

It is not a de Polignac number, because 400501051122021 - 2⁶ = 400501051121957 is a prime.

It is a super-2 number, since 2×400501051122021² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400501051121982 and 400501051122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400501051122031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249240211 + ... + 250841951.

It is an arithmetic number, because the mean of its divisors is an integer number (17091227836800).

Almost surely, 2^{400501051122021} is an apocalyptic number.

It is an amenable number.

400501051122021 is a deficient number, since it is larger than the sum of its proper divisors (146418239655579).

400501051122021 is a wasteful number, since it uses less digits than its factorization.

400501051122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606849.

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 400501051122021 in words is "four hundred trillion, five hundred one billion, fifty-one million, one hundred twenty-two thousand, twenty-one".