121112222202 has 12 divisors (see below), whose sum is σ = 262409814810. Its totient is φ = 40370740728.

The previous prime is 121112222173. The next prime is 121112222207. The reversal of 121112222202 is 202222211121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 103239473481 + 17872748721 = 321309^2 + 133689^2 .

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: 6728456789 = 121112222202 / (1 + 2 + 1 + 1 + 1 + 2 + 2 + 2 + 2 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (121112222207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3364228377 + ... + 3364228412.

Almost surely, 2^121112222202 is an apocalyptic number.

121112222202 is an abundant number, since it is smaller than the sum of its proper divisors (141297592608).

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

121112222202 is a wasteful number, since it uses less digits than its factorization.

121112222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728456797 (or 6728456794 counting only the distinct ones).

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

Adding to 121112222202 its reverse (202222211121), we get a palindrome (323334433323).

The spelling of 121112222202 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, two hundred two".