121232199121 has 24 divisors (see below), whose sum is σ = 142044425600. Its totient is φ = 103088700000.

The previous prime is 121232199113. The next prime is 121232199139. The reversal of 121232199121 is 121991232121.

It is a happy number.

It is not a de Polignac number, because 121232199121 - 2³ = 121232199113 is a prime.

It is a super-2 number, since 2×121232199121² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121232199181) 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, 152130 + ... + 515371.

Almost surely, 2^121232199121 is an apocalyptic number.

121232199121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121232199121 is a deficient number, since it is larger than the sum of its proper divisors (20812226479).

121232199121 is a wasteful number, since it uses less digits than its factorization.

121232199121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667621 (or 667610 counting only the distinct ones).

The product of its digits is 3888, while the sum is 34.

The spelling of 121232199121 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred ninety-nine thousand, one hundred twenty-one".