1220122220202 has 192 divisors, whose sum is σ = 3002556211200. Its totient is φ = 355772736000.

The previous prime is 1220122220153. The next prime is 1220122220227. The reversal of 1220122220202 is 2020222210221.

1220122220202 is a `hidden beast` number, since 1 + 220 + 1 + 22 + 220 + 202 = 666.

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 95 ways as a sum of consecutive naturals, for example, 97767799 + ... + 97780277.

It is an arithmetic number, because the mean of its divisors is an integer number (15638313600).

Almost surely, 2^{1220122220202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220122220202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501278105600).

1220122220202 is an abundant number, since it is smaller than the sum of its proper divisors (1782433990998).

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

1220122220202 is a wasteful number, since it uses less digits than its factorization.

1220122220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12841 (or 12838 counting only the distinct ones).

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

Adding to 1220122220202 its reverse (2020222210221), we get a palindrome (3240344430423).

The spelling of 1220122220202 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, two hundred two".