121121212022200 has 96 divisors (see below), whose sum is σ = 304706175525360. Its totient is φ = 44509727001600.

The previous prime is 121121212022131. The next prime is 121121212022207. The reversal of 121121212022200 is 2220212121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121212022207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109842589 + ... + 110939788.

Almost surely, 2^{121121212022200} is an apocalyptic number.

121121212022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121212022200 is an abundant number, since it is smaller than the sum of its proper divisors (183584963503160).

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

121121212022200 is a wasteful number, since it uses less digits than its factorization.

121121212022200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220782617 (or 220782608 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121121212022200 its reverse (2220212121121), we get a palindrome (123341424143321).

The spelling of 121121212022200 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twelve million, twenty-two thousand, two hundred".