121020212210202 has 12 divisors (see below), whose sum is σ = 262210459788810. Its totient is φ = 40340070736728.

The previous prime is 121020212210189. The next prime is 121020212210267. The reversal of 121020212210202 is 202012212020121.

It is a happy number.

121020212210202 is a `hidden beast` number, since 1 + 21 + 0 + 20 + 212 + 210 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117241274495601 + 3778937714601 = 10827801^2 + 1943949^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6723345122789 = 121020212210202 / (1 + 2 + 1 + 0 + 2 + 0 + 2 + 1 + 2 + 2 + 1 + 0 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3361672561377 + ... + 3361672561412.

Almost surely, 2^{121020212210202} is an apocalyptic number.

121020212210202 is an abundant number, since it is smaller than the sum of its proper divisors (141190247578608).

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

121020212210202 is a wasteful number, since it uses less digits than its factorization.

121020212210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723345122797 (or 6723345122794 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121020212210202 its reverse (202012212020121), we get a palindrome (323032424230323).

The spelling of 121020212210202 in words is "one hundred twenty-one trillion, twenty billion, two hundred twelve million, two hundred ten thousand, two hundred two".