1220220112101 has 8 divisors (see below), whose sum is σ = 1722663687744. Its totient is φ = 765628305600.

The previous prime is 1220220112063. The next prime is 1220220112103. The reversal of 1220220112101 is 1012110220221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220220112101 - 2²¹ = 1220218014949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220220112103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11962942225 + ... + 11962942326.

It is an arithmetic number, because the mean of its divisors is an integer number (215332960968).

Almost surely, 2^{1220220112101} is an apocalyptic number.

It is an amenable number.

1220220112101 is a deficient number, since it is larger than the sum of its proper divisors (502443575643).

1220220112101 is a wasteful number, since it uses less digits than its factorization.

1220220112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23925884571.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220220112101 its reverse (1012110220221), we get a palindrome (2232330332322).

The spelling of 1220220112101 in words is "one trillion, two hundred twenty billion, two hundred twenty million, one hundred twelve thousand, one hundred one".