22021221010 has 32 divisors (see below), whose sum is σ = 39875576832. Its totient is φ = 8755857600.

The previous prime is 22021220987. The next prime is 22021221023. The reversal of 22021221010 is 1012212022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1556187 + ... + 1570273.

It is an arithmetic number, because the mean of its divisors is an integer number (1246111776).

Almost surely, 2^22021221010 is an apocalyptic number.

22021221010 is a deficient number, since it is larger than the sum of its proper divisors (17854355822).

22021221010 is a wasteful number, since it uses less digits than its factorization.

22021221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15018.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22021221010 its reverse (1012212022), we get a palindrome (23033433032).

The spelling of 22021221010 in words is "twenty-two billion, twenty-one million, two hundred twenty-one thousand, ten".