1220112122213 has 4 divisors (see below), whose sum is σ = 1221736772928. Its totient is φ = 1218487471500.

The previous prime is 1220112122183. The next prime is 1220112122227. The reversal of 1220112122213 is 3122212110221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220112122213 - 2³⁰ = 1219038380389 is a prime.

It is a super-2 number, since 2×1220112122213² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220112125213) 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, 812324231 + ... + 812325732.

It is an arithmetic number, because the mean of its divisors is an integer number (305434193232).

Almost surely, 2^{1220112122213} is an apocalyptic number.

It is an amenable number.

1220112122213 is a deficient number, since it is larger than the sum of its proper divisors (1624650715).

1220112122213 is an equidigital number, since it uses as much as digits as its factorization.

1220112122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624650714.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1220112122213 its reverse (3122212110221), we get a palindrome (4342324232434).

The spelling of 1220112122213 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-two thousand, two hundred thirteen".