221011122110010 has 32 divisors (see below), whose sum is σ = 530428561350912. Its totient is φ = 58936091641920.

The previous prime is 221011122109991. The next prime is 221011122110021. The reversal of 221011122110010 is 10011221110122.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 4218061 + ... + 21443280.

It is an arithmetic number, because the mean of its divisors is an integer number (16575892542216).

Almost surely, 2^{221011122110010} is an apocalyptic number.

221011122110010 is an abundant number, since it is smaller than the sum of its proper divisors (309417439240902).

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

221011122110010 is a wasteful number, since it uses less digits than its factorization.

221011122110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25948438.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221011122110010 its reverse (10011221110122), we get a palindrome (231022343220132).

The spelling of 221011122110010 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-two million, one hundred ten thousand, ten".