1220404225242 has 16 divisors (see below), whose sum is σ = 2441310629472. Its totient is φ = 406717711920.

The previous prime is 1220404225241. The next prime is 1220404225253. The reversal of 1220404225242 is 2425224040221.

It is not an unprimeable number, because it can be changed into a prime (1220404225241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20892528 + ... + 20950859.

It is an arithmetic number, because the mean of its divisors is an integer number (152581914342).

Almost surely, 2^{1220404225242} is an apocalyptic number.

1220404225242 is an abundant number, since it is smaller than the sum of its proper divisors (1220906404230).

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

1220404225242 is a wasteful number, since it uses less digits than its factorization.

1220404225242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41848253.

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 1220404225242 its reverse (2425224040221), we get a palindrome (3645628265463).

The spelling of 1220404225242 in words is "one trillion, two hundred twenty billion, four hundred four million, two hundred twenty-five thousand, two hundred forty-two".