201122221110 has 32 divisors (see below), whose sum is σ = 483652995840. Its totient is φ = 53525962848.

The previous prime is 201122221109. The next prime is 201122221129. The reversal of 201122221110 is 11122221102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 201122221110.

It is a congruent 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, 6649000 + ... + 6679179.

It is an arithmetic number, because the mean of its divisors is an integer number (15114156120).

Almost surely, 2^201122221110 is an apocalyptic number.

201122221110 is an abundant number, since it is smaller than the sum of its proper divisors (282530774730).

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

201122221110 is a wasteful number, since it uses less digits than its factorization.

201122221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328692.

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

Adding to 201122221110 its reverse (11122221102), we get a palindrome (212244442212).

The spelling of 201122221110 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred ten".