1220110122211 has 4 divisors (see below), whose sum is σ = 1221138017352. Its totient is φ = 1219082227072.

The previous prime is 1220110122173. The next prime is 1220110122269. The reversal of 1220110122211 is 1122210110221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220110122211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220110129211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513945790 + ... + 513948163.

It is an arithmetic number, because the mean of its divisors is an integer number (305284504338).

Almost surely, 2^{1220110122211} is an apocalyptic number.

1220110122211 is a deficient number, since it is larger than the sum of its proper divisors (1027895141).

1220110122211 is a wasteful number, since it uses less digits than its factorization.

1220110122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027895140.

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

Adding to 1220110122211 its reverse (1122210110221), we get a palindrome (2342320232432).

The spelling of 1220110122211 in words is "one trillion, two hundred twenty billion, one hundred ten million, one hundred twenty-two thousand, two hundred eleven".