222001653 has 4 divisors (see below), whose sum is σ = 296002208. Its totient is φ = 148001100.

The previous prime is 222001649. The next prime is 222001697. The reversal of 222001653 is 356100222.

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 not a de Polignac number, because 222001653 - 2² = 222001649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37000273 + ... + 37000278.

It is an arithmetic number, because the mean of its divisors is an integer number (74000552).

Almost surely, 2^222001653 is an apocalyptic number.

It is an amenable number.

222001653 is a deficient number, since it is larger than the sum of its proper divisors (74000555).

222001653 is an equidigital number, since it uses as much as digits as its factorization.

222001653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74000554.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 222001653 is about 14899.7198966960. The cubic root of 222001653 is about 605.5063974996.

Adding to 222001653 its reverse (356100222), we get a palindrome (578101875).

The spelling of 222001653 in words is "two hundred twenty-two million, one thousand, six hundred fifty-three".