121102200220221 has 32 divisors (see below), whose sum is σ = 195722419875840. Its totient is φ = 73394638268400.

The previous prime is 121102200220207. The next prime is 121102200220223. The reversal of 121102200220221 is 122022002201121.

It is a happy number.

121102200220221 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 0 + 220 + 0 + 220 + 221 = 666.

It is not a de Polignac number, because 121102200220221 - 2²⁷ = 121102066002493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121102200220194 and 121102200220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102200220223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33854836 + ... + 37260626.

It is an arithmetic number, because the mean of its divisors is an integer number (6116325621120).

Almost surely, 2^{121102200220221} is an apocalyptic number.

121102200220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121102200220221 is a deficient number, since it is larger than the sum of its proper divisors (74620219655619).

121102200220221 is a wasteful number, since it uses less digits than its factorization.

121102200220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525534 (or 3525528 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121102200220221 its reverse (122022002201121), we get a palindrome (243124202421342).

The spelling of 121102200220221 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred million, two hundred twenty thousand, two hundred twenty-one".