1222100113 has 8 divisors (see below), whose sum is σ = 1319084928. Its totient is φ = 1125540624.

The previous prime is 1222100071. The next prime is 1222100137. The reversal of 1222100113 is 3110012221.

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

It is not a de Polignac number, because 1222100113 - 2⁹ = 1222099601 is a prime.

It is a super-2 number, since 2×1222100113² = 2987057372389225538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222100093 and 1222100102.

It is not an unprimeable number, because it can be changed into a prime (1222104113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100345 + ... + 111862.

It is an arithmetic number, because the mean of its divisors is an integer number (164885616).

Almost surely, 2^1222100113 is an apocalyptic number.

1222100113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1222100113 is a deficient number, since it is larger than the sum of its proper divisors (96984815).

1222100113 is a wasteful number, since it uses less digits than its factorization.

1222100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212663.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1222100113 is about 34958.5484967554. The cubic root of 1222100113 is about 1069.1425024926.

Adding to 1222100113 its reverse (3110012221), we get a palindrome (4332112334).

The spelling of 1222100113 in words is "one billion, two hundred twenty-two million, one hundred thousand, one hundred thirteen".