400000221514452 has 24 divisors (see below), whose sum is σ = 1005128761754656. Its totient is φ = 123076991235168.

The previous prime is 400000221514409. The next prime is 400000221514501. The reversal of 400000221514452 is 254415122000004.

It is a super-2 number, since 2×400000221514452² (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 7 ways as a sum of consecutive naturals, for example, 1282051991878 + ... + 1282051992189.

Almost surely, 2^{400000221514452} is an apocalyptic number.

It is an amenable number.

400000221514452 is an abundant number, since it is smaller than the sum of its proper divisors (605128540240204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400000221514452 is a wasteful number, since it uses less digits than its factorization.

400000221514452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564103984087 (or 2564103984085 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 400000221514452 its reverse (254415122000004), we get a palindrome (654415343514456).

The spelling of 400000221514452 in words is "four hundred trillion, two hundred twenty-one million, five hundred fourteen thousand, four hundred fifty-two".