222231001000 has 32 divisors (see below), whose sum is σ = 520020544680. Its totient is φ = 88892400000.

The previous prime is 222231000967. The next prime is 222231001009. The reversal of 222231001000 is 100132222.

It can be written as a sum of positive squares in 4 ways, for example, as 76002770596 + 146228230404 = 275686^2 + 382398^2 .

It is not an unprimeable number, because it can be changed into a prime (222231001009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111114501 + ... + 111116500.

Almost surely, 2^222231001000 is an apocalyptic number.

222231001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222231001000 is an abundant number, since it is smaller than the sum of its proper divisors (297789543680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222231001000 is a wasteful number, since it uses less digits than its factorization.

222231001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222231022 (or 222231008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 222231001000 its reverse (100132222), we get a palindrome (222331133222).

The spelling of 222231001000 in words is "two hundred twenty-two billion, two hundred thirty-one million, one thousand".