1220312210202 has 20 divisors (see below), whose sum is σ = 2734403286186. Its totient is φ = 406770736680.

The previous prime is 1220312210147. The next prime is 1220312210269. The reversal of 1220312210202 is 2020122130221.

1220312210202 is a `hidden beast` number, since 1 + 220 + 31 + 2 + 210 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 764188924041 + 456123286161 = 874179^2 + 675369^2 .

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 9 ways as a sum of consecutive naturals, for example, 3766395549 + ... + 3766395872.

Almost surely, 2^{1220312210202} is an apocalyptic number.

1220312210202 is an abundant number, since it is smaller than the sum of its proper divisors (1514091075984).

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

1220312210202 is an equidigital number, since it uses as much as digits as its factorization.

1220312210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532791435 (or 7532791426 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1220312210202 its reverse (2020122130221), we get a palindrome (3240434340423).

The spelling of 1220312210202 in words is "one trillion, two hundred twenty billion, three hundred twelve million, two hundred ten thousand, two hundred two".