1201212121193 has 32 divisors (see below), whose sum is σ = 1435663073280. Its totient is φ = 983425121280.

The previous prime is 1201212121189. The next prime is 1201212121199. The reversal of 1201212121193 is 3911212121021.

It is not a de Polignac number, because 1201212121193 - 2² = 1201212121189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201212121199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5205968 + ... + 5431806.

It is an arithmetic number, because the mean of its divisors is an integer number (44864471040).

Almost surely, 2^{1201212121193} is an apocalyptic number.

It is an amenable number.

1201212121193 is a deficient number, since it is larger than the sum of its proper divisors (234450952087).

1201212121193 is a wasteful number, since it uses less digits than its factorization.

1201212121193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226197.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 1201212121193 in words is "one trillion, two hundred one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ninety-three".