121111200202220 has 24 divisors (see below), whose sum is σ = 255161968386864. Its totient is φ = 48286680469056.

The previous prime is 121111200202211. The next prime is 121111200202259. The reversal of 121111200202220 is 22202002111121.

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, 9862469447 + ... + 9862481726.

It is an arithmetic number, because the mean of its divisors is an integer number (10631748682786).

Almost surely, 2^{121111200202220} is an apocalyptic number.

121111200202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111200202220 is an abundant number, since it is smaller than the sum of its proper divisors (134050768184644).

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

121111200202220 is a wasteful number, since it uses less digits than its factorization.

121111200202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19724951489 (or 19724951487 counting only the distinct ones).

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

Adding to 121111200202220 its reverse (22202002111121), we get a palindrome (143313202313341).

The spelling of 121111200202220 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred million, two hundred two thousand, two hundred twenty".