121122021022200 has 288 divisors, whose sum is σ = 458573090329200. Its totient is φ = 29362914028800.

The previous prime is 121122021022193. The next prime is 121122021022231. The reversal of 121122021022200 is 2220120221121.

It is a happy number.

121122021022200 is a `hidden beast` number, since 1 + 2 + 11 + 220 + 210 + 2 + 220 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 92032567 + ... + 93339366.

Almost surely, 2^{121122021022200} is an apocalyptic number.

121122021022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122021022200 is an abundant number, since it is smaller than the sum of its proper divisors (337451069307000).

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

121122021022200 is a wasteful number, since it uses less digits than its factorization.

121122021022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185371980 (or 185371954 counting only the distinct ones).

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

Adding to 121122021022200 its reverse (2220120221121), we get a palindrome (123342141243321).

The spelling of 121122021022200 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred".