121840202 has 8 divisors (see below), whose sum is σ = 199374912. Its totient is φ = 55381900.

The previous prime is 121840193. The next prime is 121840211. The reversal of 121840202 is 202048121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121840193) and next prime (121840211).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2769074 + ... + 2769117.

It is an arithmetic number, because the mean of its divisors is an integer number (24921864).

Almost surely, 2^121840202 is an apocalyptic number.

121840202 is a deficient number, since it is larger than the sum of its proper divisors (77534710).

121840202 is a wasteful number, since it uses less digits than its factorization.

121840202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538204.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 121840202 is about 11038.1249313459. The cubic root of 121840202 is about 495.7509290797.

Adding to 121840202 its reverse (202048121), we get a palindrome (323888323).

The spelling of 121840202 in words is "one hundred twenty-one million, eight hundred forty thousand, two hundred two".