121233210202 has 16 divisors (see below), whose sum is σ = 207358161192. Its totient is φ = 52662389760.

The previous prime is 121233210199. The next prime is 121233210209. The reversal of 121233210202 is 202012332121.

It can be written as a sum of positive squares in 4 ways, for example, as 118638224721 + 2594985481 = 344439^2 + 50941^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121233210202.

It is not an unprimeable number, because it can be changed into a prime (121233210209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137141199 + ... + 137142082.

Almost surely, 2^121233210202 is an apocalyptic number.

121233210202 is a deficient number, since it is larger than the sum of its proper divisors (86124950990).

121233210202 is a wasteful number, since it uses less digits than its factorization.

121233210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274283313.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121233210202 its reverse (202012332121), we get a palindrome (323245542323).

The spelling of 121233210202 in words is "one hundred twenty-one billion, two hundred thirty-three million, two hundred ten thousand, two hundred two".