121222220202 has 96 divisors (see below), whose sum is σ = 269249657040. Its totient is φ = 39407385600.

The previous prime is 121222220183. The next prime is 121222220221. The reversal of 121222220202 is 202022222121.

121222220202 is a `hidden beast` number, since 1 + 21 + 222 + 220 + 202 = 666.

It is an interprime number because it is at equal distance from previous prime (121222220183) and next prime (121222220221).

It can be written as a sum of positive squares in 8 ways, for example, as 101225149281 + 19997070921 = 318159^2 + 141411^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47406708 + ... + 47409264.

Almost surely, 2^121222220202 is an apocalyptic number.

121222220202 is an abundant number, since it is smaller than the sum of its proper divisors (148027436838).

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

121222220202 is a wasteful number, since it uses less digits than its factorization.

121222220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048 (or 3045 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 121222220202 its reverse (202022222121), we get a palindrome (323244442323).

The spelling of 121222220202 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred two".