1220220011002 has 16 divisors (see below), whose sum is σ = 1945537344360. Its totient is φ = 571986853888.

The previous prime is 1220220010981. The next prime is 1220220011047. The reversal of 1220220011002 is 2001100220221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1195394542281 + 24825468721 = 1093341^2 + 157561^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69813877 + ... + 69831352.

Almost surely, 2^{1220220011002} is an apocalyptic number.

1220220011002 is a deficient number, since it is larger than the sum of its proper divisors (725317333358).

1220220011002 is a wasteful number, since it uses less digits than its factorization.

1220220011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139645505.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220220011002 its reverse (2001100220221), we get a palindrome (3221320231223).

The spelling of 1220220011002 in words is "one trillion, two hundred twenty billion, two hundred twenty million, eleven thousand, two".