121020220222100 has 36 divisors (see below), whose sum is σ = 262614681626304. Its totient is φ = 48407939933280.

The previous prime is 121020220221917. The next prime is 121020220222129. The reversal of 121020220222100 is 1222022020121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34543829 + ... + 37885571.

Almost surely, 2^{121020220222100} is an apocalyptic number.

121020220222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020220222100 is an abundant number, since it is smaller than the sum of its proper divisors (141594461404204).

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

121020220222100 is a wasteful number, since it uses less digits than its factorization.

121020220222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703904 (or 3703897 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121020220222100 its reverse (1222022020121), we get a palindrome (122242242242221).

The spelling of 121020220222100 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty million, two hundred twenty-two thousand, one hundred".