121921002 has 24 divisors (see below), whose sum is σ = 301899936. Its totient is φ = 34834536.

The previous prime is 121921001. The next prime is 121921061. The reversal of 121921002 is 200129121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121921001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 483688 + ... + 483939.

It is an arithmetic number, because the mean of its divisors is an integer number (12579164).

Almost surely, 2^121921002 is an apocalyptic number.

121921002 is an abundant number, since it is smaller than the sum of its proper divisors (179978934).

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

121921002 is a wasteful number, since it uses less digits than its factorization.

121921002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967642 (or 967639 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 121921002 is about 11041.7843666683. The cubic root of 121921002 is about 495.8604928716.

The spelling of 121921002 in words is "one hundred twenty-one million, nine hundred twenty-one thousand, two".