220404121002 has 24 divisors (see below), whose sum is σ = 514276282884. Its totient is φ = 67816652544.

The previous prime is 220404120917. The next prime is 220404121039. The reversal of 220404121002 is 200121404022.

It can be written as a sum of positive squares in 2 ways, for example, as 214545902481 + 5858218521 = 463191^2 + 76539^2 .

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, 470948743 + ... + 470949210.

Almost surely, 2^220404121002 is an apocalyptic number.

220404121002 is an abundant number, since it is smaller than the sum of its proper divisors (293872161882).

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

220404121002 is a wasteful number, since it uses less digits than its factorization.

220404121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941897974 (or 941897971 counting only the distinct ones).

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

Adding to 220404121002 its reverse (200121404022), we get a palindrome (420525525024).

The spelling of 220404121002 in words is "two hundred twenty billion, four hundred four million, one hundred twenty-one thousand, two".