221214415401 has 24 divisors (see below), whose sum is σ = 368592254784. Its totient is φ = 125226848160.

The previous prime is 221214415369. The next prime is 221214415421. The reversal of 221214415401 is 104514412122.

221214415401 is a `hidden beast` number, since 2 + 2 + 1 + 214 + 41 + 5 + 401 = 666.

It is not a de Polignac number, because 221214415401 - 2⁵ = 221214415369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221214415421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16401390 + ... + 16414871.

It is an arithmetic number, because the mean of its divisors is an integer number (15358010616).

Almost surely, 2^221214415401 is an apocalyptic number.

221214415401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221214415401 is a deficient number, since it is larger than the sum of its proper divisors (147377839383).

221214415401 is a wasteful number, since it uses less digits than its factorization.

221214415401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32816381 (or 32816378 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 221214415401 its reverse (104514412122), we get a palindrome (325728827523).

The spelling of 221214415401 in words is "two hundred twenty-one billion, two hundred fourteen million, four hundred fifteen thousand, four hundred one".