1222131021 has 8 divisors (see below), whose sum is σ = 1685698080. Its totient is φ = 786658992.

The previous prime is 1222131017. The next prime is 1222131077. The reversal of 1222131021 is 1201312221.

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

It is not a de Polignac number, because 1222131021 - 2² = 1222131017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222135021) 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, 7023655 + ... + 7023828.

It is an arithmetic number, because the mean of its divisors is an integer number (210712260).

Almost surely, 2^1222131021 is an apocalyptic number.

It is an amenable number.

1222131021 is a deficient number, since it is larger than the sum of its proper divisors (463567059).

1222131021 is a wasteful number, since it uses less digits than its factorization.

1222131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14047515.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1222131021 is about 34958.9905603694. The cubic root of 1222131021 is about 1069.1515156052.

Adding to 1222131021 its reverse (1201312221), we get a palindrome (2423443242).

The spelling of 1222131021 in words is "one billion, two hundred twenty-two million, one hundred thirty-one thousand, twenty-one".