1222631101 has 4 divisors (see below), whose sum is σ = 1223379612. Its totient is φ = 1221882592.

The previous prime is 1222631089. The next prime is 1222631117. The reversal of 1222631101 is 1011362221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59752900 + 1162878201 = 7730^2 + 34101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222631101 - 2⁹ = 1222630589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222631141) 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, 371800 + ... + 375073.

It is an arithmetic number, because the mean of its divisors is an integer number (305844903).

Almost surely, 2^1222631101 is an apocalyptic number.

It is an amenable number.

1222631101 is a deficient number, since it is larger than the sum of its proper divisors (748511).

1222631101 is an equidigital number, since it uses as much as digits as its factorization.

1222631101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748510.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1222631101 is about 34966.1422092858. The cubic root of 1222631101 is about 1069.2973233164.

Adding to 1222631101 its reverse (1011362221), we get a palindrome (2233993322).

The spelling of 1222631101 in words is "one billion, two hundred twenty-two million, six hundred thirty-one thousand, one hundred one".