121200101021200 has 60 divisors (see below), whose sum is σ = 291273985346580. Its totient is φ = 48464932372480.

The previous prime is 121200101021183. The next prime is 121200101021333. The reversal of 121200101021200 is 2120101002121.

It can be written as a sum of positive squares in 6 ways, for example, as 8494869843216 + 112705231177984 = 2914596^2 + 10616272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45927409 + ... + 48494608.

It is an arithmetic number, because the mean of its divisors is an integer number (4854566422443).

Almost surely, 2^{121200101021200} is an apocalyptic number.

121200101021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121200101021200 is an abundant number, since it is smaller than the sum of its proper divisors (170073884325380).

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

121200101021200 is a wasteful number, since it uses less digits than its factorization.

121200101021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94425244 (or 94425233 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121200101021200 its reverse (2120101002121), we get a palindrome (123320202023321).

The spelling of 121200101021200 in words is "one hundred twenty-one trillion, two hundred billion, one hundred one million, twenty-one thousand, two hundred".