401122217655 has 48 divisors (see below), whose sum is σ = 696941612640. Its totient is φ = 213420672000.

The previous prime is 401122217653. The next prime is 401122217677. The reversal of 401122217655 is 556712221104.

401122217655 is a `hidden beast` number, since 401 + 12 + 22 + 176 + 55 = 666.

It is not a de Polignac number, because 401122217655 - 2¹ = 401122217653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401122217653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43781275 + ... + 43790435.

It is an arithmetic number, because the mean of its divisors is an integer number (14519616930).

Almost surely, 2^401122217655 is an apocalyptic number.

401122217655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

401122217655 is a deficient number, since it is larger than the sum of its proper divisors (295819394985).

401122217655 is a wasteful number, since it uses less digits than its factorization.

401122217655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11392 (or 11389 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

Adding to 401122217655 its reverse (556712221104), we get a palindrome (957834438759).

The spelling of 401122217655 in words is "four hundred one billion, one hundred twenty-two million, two hundred seventeen thousand, six hundred fifty-five".