121998032270 has 16 divisors (see below), whose sum is σ = 219600475920. Its totient is φ = 48798320064.

The previous prime is 121998032269. The next prime is 121998032291. The reversal of 121998032270 is 72230899121.

It is a super-2 number, since 2×121998032270² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892226 + ... + 1019834.

It is an arithmetic number, because the mean of its divisors is an integer number (13725029745).

Almost surely, 2^121998032270 is an apocalyptic number.

121998032270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121998032270 is a deficient number, since it is larger than the sum of its proper divisors (97602443650).

121998032270 is a wasteful number, since it uses less digits than its factorization.

121998032270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223219.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 121998032270 in words is "one hundred twenty-one billion, nine hundred ninety-eight million, thirty-two thousand, two hundred seventy".