221122211010 has 64 divisors (see below), whose sum is σ = 533553381504. Its totient is φ = 58648896000.

The previous prime is 221122210999. The next prime is 221122211029. The reversal of 221122211010 is 10112221122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4721710 + ... + 4768310.

It is an arithmetic number, because the mean of its divisors is an integer number (8336771586).

Almost surely, 2^221122211010 is an apocalyptic number.

221122211010 is an abundant number, since it is smaller than the sum of its proper divisors (312431170494).

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

221122211010 is a wasteful number, since it uses less digits than its factorization.

221122211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47459.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221122211010 its reverse (10112221122), we get a palindrome (231234432132).

The spelling of 221122211010 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, ten".