121210222221110 has 128 divisors (see below), whose sum is σ = 254552603885568. Its totient is φ = 41065903360000.

The previous prime is 121210222221043. The next prime is 121210222221169. The reversal of 121210222221110 is 11122222012121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1160176175 + ... + 1160280645.

It is an arithmetic number, because the mean of its divisors is an integer number (1988692217856).

Almost surely, 2^{121210222221110} is an apocalyptic number.

121210222221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210222221110 is an abundant number, since it is smaller than the sum of its proper divisors (133342381664458).

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

121210222221110 is a wasteful number, since it uses less digits than its factorization.

121210222221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110750.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121210222221110 its reverse (11122222012121), we get a palindrome (132332444233231).

The spelling of 121210222221110 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred ten".