1221022122110 has 16 divisors (see below), whose sum is σ = 2511816937056. Its totient is φ = 418636156128.

The previous prime is 1221022122109. The next prime is 1221022122157. The reversal of 1221022122110 is 112212201221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8721586517 + ... + 8721586656.

It is an arithmetic number, because the mean of its divisors is an integer number (156988558566).

Almost surely, 2^{1221022122110} is an apocalyptic number.

1221022122110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221022122110 is an abundant number, since it is smaller than the sum of its proper divisors (1290794814946).

1221022122110 is a wasteful number, since it uses less digits than its factorization.

1221022122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443173187.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221022122110 its reverse (112212201221), we get a palindrome (1333234323331).

The spelling of 1221022122110 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, one hundred ten".