121212211010202 has 32 divisors (see below), whose sum is σ = 290080504983360. Its totient is φ = 37296064926000.

The previous prime is 121212211010161. The next prime is 121212211010207. The reversal of 121212211010202 is 202010112212121.

121212211010202 is a `hidden beast` number, since 121 + 21 + 221 + 101 + 0 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121212211010207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86333482924 + ... + 86333484327.

It is an arithmetic number, because the mean of its divisors is an integer number (9065015780730).

Almost surely, 2^{121212211010202} is an apocalyptic number.

121212211010202 is an abundant number, since it is smaller than the sum of its proper divisors (168868293973158).

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

121212211010202 is a wasteful number, since it uses less digits than its factorization.

121212211010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172666967275 (or 172666967269 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121212211010202 its reverse (202010112212121), we get a palindrome (323222323222323).

The spelling of 121212211010202 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred eleven million, ten thousand, two hundred two".