222132021 has 16 divisors (see below), whose sum is σ = 312143040. Its totient is φ = 140123520.

The previous prime is 222131989. The next prime is 222132041. The reversal of 222132021 is 120231222.

It is a happy number.

It is not a de Polignac number, because 222132021 - 2⁵ = 222131989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222132041) 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, 58641 + ... + 62313.

It is an arithmetic number, because the mean of its divisors is an integer number (19508940).

Almost surely, 2^222132021 is an apocalyptic number.

It is an amenable number.

222132021 is a deficient number, since it is larger than the sum of its proper divisors (90011019).

222132021 is a wasteful number, since it uses less digits than its factorization.

222132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222132021 is about 14904.0941019574. The cubic root of 222132021 is about 605.6248999373.

Adding to 222132021 its reverse (120231222), we get a palindrome (342363243).

The spelling of 222132021 in words is "two hundred twenty-two million, one hundred thirty-two thousand, twenty-one".