22031221010 has 8 divisors (see below), whose sum is σ = 39656197836. Its totient is φ = 8812488400.

The previous prime is 22031220997. The next prime is 22031221021. The reversal of 22031221010 is 1012213022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21520596601 + 510624409 = 146699^2 + 22597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101561041 + ... + 1101561060.

Almost surely, 2^22031221010 is an apocalyptic number.

22031221010 is a deficient number, since it is larger than the sum of its proper divisors (17624976826).

22031221010 is a wasteful number, since it uses less digits than its factorization.

22031221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203122108.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22031221010 its reverse (1012213022), we get a palindrome (23043434032).

The spelling of 22031221010 in words is "twenty-two billion, thirty-one million, two hundred twenty-one thousand, ten".