1220221022202 has 192 divisors, whose sum is σ = 3346817720064. Its totient is φ = 312654919680.

The previous prime is 1220221022171. The next prime is 1220221022243. The reversal of 1220221022202 is 2022201220221.

1220221022202 is a `hidden beast` number, since 1 + 220 + 221 + 0 + 2 + 220 + 2 = 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, 41864178 + ... + 41893314.

It is an arithmetic number, because the mean of its divisors is an integer number (17431342292).

Almost surely, 2^{1220221022202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220221022202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1673408860032).

1220221022202 is an abundant number, since it is smaller than the sum of its proper divisors (2126596697862).

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

1220221022202 is a wasteful number, since it uses less digits than its factorization.

1220221022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29893 (or 29890 counting only the distinct ones).

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

Adding to 1220221022202 its reverse (2022201220221), we get a palindrome (3242422242423).

The spelling of 1220221022202 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, twenty-two thousand, two hundred two".