121232158490 has 48 divisors (see below), whose sum is σ = 228661367040. Its totient is φ = 46267351200.

The previous prime is 121232158457. The next prime is 121232158493. The reversal of 121232158490 is 94851232121.

It is a super-3 number, since 3×121232158490³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121232158493) 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, 593471 + ... + 771149.

It is an arithmetic number, because the mean of its divisors is an integer number (4763778480).

Almost surely, 2^121232158490 is an apocalyptic number.

121232158490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121232158490 is a deficient number, since it is larger than the sum of its proper divisors (107429208550).

121232158490 is a wasteful number, since it uses less digits than its factorization.

121232158490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177819 (or 177788 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 121232158490 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred fifty-eight thousand, four hundred ninety".