1231322212998 has 12 divisors (see below), whose sum is σ = 2667864794868. Its totient is φ = 410440737660.

The previous prime is 1231322212963. The next prime is 1231322213027. The reversal of 1231322212998 is 8992122231321.

1231322212998 is a `hidden beast` number, since 1 + 2 + 3 + 132 + 221 + 299 + 8 = 666.

It is a super-3 number, since 3×1231322212998³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34203394788 + ... + 34203394823.

It is an arithmetic number, because the mean of its divisors is an integer number (222322066239).

Almost surely, 2^{1231322212998} is an apocalyptic number.

1231322212998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1231322212998 is an abundant number, since it is smaller than the sum of its proper divisors (1436542581870).

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

1231322212998 is a wasteful number, since it uses less digits than its factorization.

1231322212998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68406789619 (or 68406789616 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The spelling of 1231322212998 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-two million, two hundred twelve thousand, nine hundred ninety-eight".