222213551 has 16 divisors (see below), whose sum is σ = 261955584. Its totient is φ = 184542624.

The previous prime is 222213463. The next prime is 222213559. The reversal of 222213551 is 155312222.

It is not a de Polignac number, because 222213551 - 2¹⁰ = 222212527 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 (222213559) 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 15 ways as a sum of consecutive naturals, for example, 35321 + ... + 41133.

It is an arithmetic number, because the mean of its divisors is an integer number (16372224).

Almost surely, 2^222213551 is an apocalyptic number.

222213551 is a deficient number, since it is larger than the sum of its proper divisors (39742033).

222213551 is a wasteful number, since it uses less digits than its factorization.

222213551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990.

The product of its digits is 1200, while the sum is 23.

The square root of 222213551 is about 14906.8290055263. The cubic root of 222213551 is about 605.6989858467.

Adding to 222213551 its reverse (155312222), we get a palindrome (377525773).

The spelling of 222213551 in words is "two hundred twenty-two million, two hundred thirteen thousand, five hundred fifty-one".