121231212193 has 8 divisors (see below), whose sum is σ = 149207645888. Its totient is φ = 95919200784.

The previous prime is 121231212191. The next prime is 121231212197. The reversal of 121231212193 is 391212132121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121231212193 - 2¹ = 121231212191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121231212191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666105471 + ... + 666105652.

It is an arithmetic number, because the mean of its divisors is an integer number (18650955736).

Almost surely, 2^121231212193 is an apocalyptic number.

121231212193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121231212193 is a deficient number, since it is larger than the sum of its proper divisors (27976433695).

121231212193 is a wasteful number, since it uses less digits than its factorization.

121231212193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332211143.

The product of its digits is 1296, while the sum is 28.

The spelling of 121231212193 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred twelve thousand, one hundred ninety-three".