121220222202 has 24 divisors (see below), whose sum is σ = 278093451636. Its totient is φ = 38029873536.

The previous prime is 121220222173. The next prime is 121220222213. The reversal of 121220222202 is 202222022121.

121220222202 is a `hidden beast` number, since 1 + 21 + 220 + 222 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 115803409401 + 5416812801 = 340299^2 + 73599^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198071953 + ... + 198072564.

Almost surely, 2^121220222202 is an apocalyptic number.

121220222202 is an abundant number, since it is smaller than the sum of its proper divisors (156873229434).

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

121220222202 is a wasteful number, since it uses less digits than its factorization.

121220222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396144542 (or 396144539 counting only the distinct ones).

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

Adding to 121220222202 its reverse (202222022121), we get a palindrome (323442244323).

The spelling of 121220222202 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred two".