222001540231 has 4 divisors (see below), whose sum is σ = 227164366792. Its totient is φ = 216838713672.

The previous prime is 222001540219. The next prime is 222001540249. The reversal of 222001540231 is 132045100222.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222001540231 is a prime.

It is a super-2 number, since 2×222001540231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001541231) 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, 2581413216 + ... + 2581413301.

It is an arithmetic number, because the mean of its divisors is an integer number (56791091698).

Almost surely, 2^222001540231 is an apocalyptic number.

222001540231 is a deficient number, since it is larger than the sum of its proper divisors (5162826561).

222001540231 is an equidigital number, since it uses as much as digits as its factorization.

222001540231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162826560.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 222001540231 its reverse (132045100222), we get a palindrome (354046640453).

The spelling of 222001540231 in words is "two hundred twenty-two billion, one million, five hundred forty thousand, two hundred thirty-one".