121102211321220 has 24 divisors (see below), whose sum is σ = 339086191699584. Its totient is φ = 32293923018976.

The previous prime is 121102211321213. The next prime is 121102211321237. The reversal of 121102211321220 is 22123112201121.

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, 1009185094284 + ... + 1009185094403.

It is an arithmetic number, because the mean of its divisors is an integer number (14128591320816).

Almost surely, 2^{121102211321220} is an apocalyptic number.

121102211321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102211321220 is an abundant number, since it is smaller than the sum of its proper divisors (217983980378364).

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

121102211321220 is a wasteful number, since it uses less digits than its factorization.

121102211321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018370188699 (or 2018370188697 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 121102211321220 its reverse (22123112201121), we get a palindrome (143225323522341).

The spelling of 121102211321220 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred eleven million, three hundred twenty-one thousand, two hundred twenty".