221111144429 has 4 divisors (see below), whose sum is σ = 252698450784. Its totient is φ = 189523838076.

The previous prime is 221111144393. The next prime is 221111144447. The reversal of 221111144429 is 924441111122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221111144429 - 2⁸ = 221111144173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221111144395 and 221111144404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111144489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15793653167 + ... + 15793653180.

It is an arithmetic number, because the mean of its divisors is an integer number (63174612696).

Almost surely, 2^221111144429 is an apocalyptic number.

It is an amenable number.

221111144429 is a deficient number, since it is larger than the sum of its proper divisors (31587306355).

221111144429 is an equidigital number, since it uses as much as digits as its factorization.

221111144429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31587306354.

The product of its digits is 4608, while the sum is 32.

The spelling of 221111144429 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred forty-four thousand, four hundred twenty-nine".