221411761027401 has 32 divisors (see below), whose sum is σ = 338731282391040. Its totient is φ = 126018025314624.

The previous prime is 221411761027337. The next prime is 221411761027481. The reversal of 221411761027401 is 104720167114122.

It is not a de Polignac number, because 221411761027401 - 2⁶ = 221411761027337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221411761027401.

It is not an unprimeable number, because it can be changed into a prime (221411761027481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16748976 + ... + 26895198.

It is an arithmetic number, because the mean of its divisors is an integer number (10585352574720).

Almost surely, 2^{221411761027401} is an apocalyptic number.

221411761027401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221411761027401 is a deficient number, since it is larger than the sum of its proper divisors (117319521363639).

221411761027401 is a wasteful number, since it uses less digits than its factorization.

221411761027401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10150365.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 221411761027401 in words is "two hundred twenty-one trillion, four hundred eleven billion, seven hundred sixty-one million, twenty-seven thousand, four hundred one".