121982902 has 4 divisors (see below), whose sum is σ = 182974356. Its totient is φ = 60991450.

The previous prime is 121982867. The next prime is 121982909. The reversal of 121982902 is 209289121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209289121 = 23 ⋅9099527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121982909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30495724 + ... + 30495727.

It is an arithmetic number, because the mean of its divisors is an integer number (45743589).

Almost surely, 2^121982902 is an apocalyptic number.

121982902 is a deficient number, since it is larger than the sum of its proper divisors (60991454).

121982902 is an equidigital number, since it uses as much as digits as its factorization.

121982902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60991453.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 121982902 is about 11044.5869999742. The cubic root of 121982902 is about 495.9443957568.

The spelling of 121982902 in words is "one hundred twenty-one million, nine hundred eighty-two thousand, nine hundred two".