121200212209998 has 64 divisors (see below), whose sum is σ = 248207589365760. Its totient is φ = 39442975875072.

The previous prime is 121200212209961. The next prime is 121200212210023. The reversal of 121200212209998 is 899902212002121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1159991523 + ... + 1160096001.

It is an arithmetic number, because the mean of its divisors is an integer number (3878243583840).

Almost surely, 2^{121200212209998} is an apocalyptic number.

121200212209998 is an abundant number, since it is smaller than the sum of its proper divisors (127007377155762).

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

121200212209998 is a wasteful number, since it uses less digits than its factorization.

121200212209998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130201.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 121200212209998 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twelve million, two hundred nine thousand, nine hundred ninety-eight".