121200001133211 has 144 divisors (see below), whose sum is σ = 242733796081920. Its totient is φ = 56547127054080.

The previous prime is 121200001133201. The next prime is 121200001133291. The reversal of 121200001133211 is 112331100002121.

121200001133211 is a `hidden beast` number, since 121 + 200 + 0 + 0 + 1 + 1 + 332 + 11 = 666.

It is not a de Polignac number, because 121200001133211 - 2²⁶ = 121199934024347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121200001133201) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9651301 + ... + 18317958.

It is an arithmetic number, because the mean of its divisors is an integer number (1685651361680).

Almost surely, 2^{121200001133211} is an apocalyptic number.

121200001133211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121200001133211 is an abundant number, since it is smaller than the sum of its proper divisors (121533794948709).

121200001133211 is a wasteful number, since it uses less digits than its factorization.

121200001133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27969346 (or 27969330 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121200001133211 its reverse (112331100002121), we get a palindrome (233531101135332).

The spelling of 121200001133211 in words is "one hundred twenty-one trillion, two hundred billion, one million, one hundred thirty-three thousand, two hundred eleven".