121987202 has 4 divisors (see below), whose sum is σ = 182980806. Its totient is φ = 60993600.

The previous prime is 121987181. The next prime is 121987213. The reversal of 121987202 is 202789121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121903681 + 83521 = 11041^2 + 289^2 .

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30496799 + ... + 30496802.

Almost surely, 2^121987202 is an apocalyptic number.

121987202 is a deficient number, since it is larger than the sum of its proper divisors (60993604).

121987202 is an equidigital number, since it uses as much as digits as its factorization.

121987202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60993603.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 121987202 is about 11044.7816637542. The cubic root of 121987202 is about 495.9502231742.

The spelling of 121987202 in words is "one hundred twenty-one million, nine hundred eighty-seven thousand, two hundred two".