1220001220102 has 64 divisors (see below), whose sum is σ = 2128384258560. Its totient is φ = 513706945536.

The previous prime is 1220001220099. The next prime is 1220001220159. The reversal of 1220001220102 is 2010221000221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173612713 + ... + 173619739.

It is an arithmetic number, because the mean of its divisors is an integer number (33256004040).

Almost surely, 2^{1220001220102} is an apocalyptic number.

1220001220102 is a deficient number, since it is larger than the sum of its proper divisors (908383038458).

1220001220102 is a wasteful number, since it uses less digits than its factorization.

1220001220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8045.

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

Adding to 1220001220102 its reverse (2010221000221), we get a palindrome (3230222220323).

The spelling of 1220001220102 in words is "one trillion, two hundred twenty billion, one million, two hundred twenty thousand, one hundred two".