1220021111102 has 16 divisors (see below), whose sum is σ = 1834113192912. Its totient is φ = 608650279680.

The previous prime is 1220021111069. The next prime is 1220021111129. The reversal of 1220021111102 is 2011111200221.

It is a congruent 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, 11755028 + ... + 11858360.

It is an arithmetic number, because the mean of its divisors is an integer number (114632074557).

Almost surely, 2^{1220021111102} is an apocalyptic number.

1220021111102 is a deficient number, since it is larger than the sum of its proper divisors (614092081810).

1220021111102 is a wasteful number, since it uses less digits than its factorization.

1220021111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116443.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220021111102 its reverse (2011111200221), we get a palindrome (3231132311323).

The spelling of 1220021111102 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred eleven thousand, one hundred two".