222141551 has 4 divisors (see below), whose sum is σ = 222381600. Its totient is φ = 221901504.

The previous prime is 222141541. The next prime is 222141581. The reversal of 222141551 is 155141222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222141551 - 2⁶ = 222141487 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 (222141541) 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, 118631 + ... + 120488.

It is an arithmetic number, because the mean of its divisors is an integer number (55595400).

Almost surely, 2^222141551 is an apocalyptic number.

222141551 is a deficient number, since it is larger than the sum of its proper divisors (240049).

222141551 is an equidigital number, since it uses as much as digits as its factorization.

222141551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240048.

The product of its digits is 800, while the sum is 23.

The square root of 222141551 is about 14904.4138093385. The cubic root of 222141551 is about 605.6335607369.

Adding to 222141551 its reverse (155141222), we get a palindrome (377282773).

The spelling of 222141551 in words is "two hundred twenty-two million, one hundred forty-one thousand, five hundred fifty-one".