121202001992 has 16 divisors (see below), whose sum is σ = 227257812540. Its totient is φ = 60599918656.

The previous prime is 121202001989. The next prime is 121202002067. The reversal of 121202001992 is 299100202121.

It can be written as a sum of positive squares in 2 ways, for example, as 84619319236 + 36582682756 = 290894^2 + 191266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537338 + ... + 728790.

Almost surely, 2^121202001992 is an apocalyptic number.

It is an amenable number.

121202001992 is a deficient number, since it is larger than the sum of its proper divisors (106055810548).

121202001992 is a wasteful number, since it uses less digits than its factorization.

121202001992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270592 (or 270588 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 121202001992 in words is "one hundred twenty-one billion, two hundred two million, one thousand, nine hundred ninety-two".