221412432100401 has 16 divisors (see below), whose sum is σ = 336018867145920. Its totient is φ = 144008085918240.

The previous prime is 221412432100397. The next prime is 221412432100411. The reversal of 221412432100401 is 104001234214122.

221412432100401 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 1 + 2 + 43 + 210 + 0 + 401 = 666.

It is not a de Polignac number, because 221412432100401 - 2² = 221412432100397 is a prime.

It is a super-2 number, since 2×221412432100401² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (221412432100411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100005614115 + ... + 100005616328.

It is an arithmetic number, because the mean of its divisors is an integer number (21001179196620).

Almost surely, 2^{221412432100401} is an apocalyptic number.

It is an amenable number.

221412432100401 is a deficient number, since it is larger than the sum of its proper divisors (114606435045519).

221412432100401 is a wasteful number, since it uses less digits than its factorization.

221412432100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200011230493 (or 200011230487 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 221412432100401 its reverse (104001234214122), we get a palindrome (325413666314523).

The spelling of 221412432100401 in words is "two hundred twenty-one trillion, four hundred twelve billion, four hundred thirty-two million, one hundred thousand, four hundred one".