222124649 has 4 divisors (see below), whose sum is σ = 233815440. Its totient is φ = 210433860.

The previous prime is 222124633. The next prime is 222124657. The reversal of 222124649 is 946421222.

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 222124649 - 2⁴ = 222124633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222124349) 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, 5845367 + ... + 5845404.

It is an arithmetic number, because the mean of its divisors is an integer number (58453860).

Almost surely, 2^222124649 is an apocalyptic number.

It is an amenable number.

222124649 is a deficient number, since it is larger than the sum of its proper divisors (11690791).

222124649 is a wasteful number, since it uses less digits than its factorization.

222124649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11690790.

The product of its digits is 13824, while the sum is 32.

The square root of 222124649 is about 14903.8467853102. The cubic root of 222124649 is about 605.6182001435.

The spelling of 222124649 in words is "two hundred twenty-two million, one hundred twenty-four thousand, six hundred forty-nine".