1222031101 has 4 divisors (see below), whose sum is σ = 1275162912. Its totient is φ = 1168899292.

The previous prime is 1222031089. The next prime is 1222031137. The reversal of 1222031101 is 1011302221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1011302221 = 67 ⋅15094063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222031101 is a prime.

It is a super-2 number, since 2×1222031101² = 2986720023622544402, which 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 (1222031141) 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 3 ways as a sum of consecutive naturals, for example, 26565871 + ... + 26565916.

It is an arithmetic number, because the mean of its divisors is an integer number (318790728).

Almost surely, 2^1222031101 is an apocalyptic number.

It is an amenable number.

1222031101 is a deficient number, since it is larger than the sum of its proper divisors (53131811).

1222031101 is an equidigital number, since it uses as much as digits as its factorization.

1222031101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53131810.

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

The square root of 1222031101 is about 34957.5614281088. The cubic root of 1222031101 is about 1069.1223772861.

Adding to 1222031101 its reverse (1011302221), we get a palindrome (2233333322).

The spelling of 1222031101 in words is "one billion, two hundred twenty-two million, thirty-one thousand, one hundred one".