401250221020504 has 16 divisors (see below), whose sum is σ = 752357667235320. Its totient is φ = 200621509757760.

The previous prime is 401250221020469. The next prime is 401250221020511. The reversal of 401250221020504 is 405020122052104.

It is a happy number.

It is a super-2 number, since 2×401250221020504² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449620434 + ... + 450511969.

Almost surely, 2^{401250221020504} is an apocalyptic number.

It is an amenable number.

401250221020504 is a deficient number, since it is larger than the sum of its proper divisors (351107446214816).

401250221020504 is a wasteful number, since it uses less digits than its factorization.

401250221020504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900188130 (or 900188126 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 401250221020504 its reverse (405020122052104), we get a palindrome (806270343072608).

The spelling of 401250221020504 in words is "four hundred one trillion, two hundred fifty billion, two hundred twenty-one million, twenty thousand, five hundred four".