1220102221111 has 16 divisors (see below), whose sum is σ = 1286983857600. Its totient is φ = 1154395475200.

The previous prime is 1220102221073. The next prime is 1220102221123. The reversal of 1220102221111 is 1111222010221.

It is a cyclic number.

It is not a de Polignac number, because 1220102221111 - 2²⁷ = 1219968003383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220102221511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2186481 + ... + 2687173.

It is an arithmetic number, because the mean of its divisors is an integer number (80436491100).

Almost surely, 2^{1220102221111} is an apocalyptic number.

1220102221111 is a deficient number, since it is larger than the sum of its proper divisors (66881636489).

1220102221111 is a wasteful number, since it uses less digits than its factorization.

1220102221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501866.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220102221111 its reverse (1111222010221), we get a palindrome (2331324231332).

The spelling of 1220102221111 in words is "one trillion, two hundred twenty billion, one hundred two million, two hundred twenty-one thousand, one hundred eleven".