1220001102002 has 16 divisors (see below), whose sum is σ = 2021894410752. Its totient is φ = 549156505920.

The previous prime is 1220001101989. The next prime is 1220001102043. The reversal of 1220001102002 is 2002011000221.

It is a happy number.

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, 780051074 + ... + 780052637.

It is an arithmetic number, because the mean of its divisors is an integer number (126368400672).

Almost surely, 2^{1220001102002} is an apocalyptic number.

1220001102002 is a deficient number, since it is larger than the sum of its proper divisors (801893308750).

1220001102002 is a wasteful number, since it uses less digits than its factorization.

1220001102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560103753.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220001102002 its reverse (2002011000221), we get a palindrome (3222012102223).

The spelling of 1220001102002 in words is "one trillion, two hundred twenty billion, one million, one hundred two thousand, two".