1222232021 has 8 divisors (see below), whose sum is σ = 1237928160. Its totient is φ = 1206559152.

The previous prime is 1222231973. The next prime is 1222232083. The reversal of 1222232021 is 1202322221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222232021 is a prime.

It is a super-2 number, since 2×1222232021² = 2987702226315488882, 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 (1222232821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116051 + ... + 126143.

It is an arithmetic number, because the mean of its divisors is an integer number (154741020).

Almost surely, 2^1222232021 is an apocalyptic number.

It is an amenable number.

1222232021 is a deficient number, since it is larger than the sum of its proper divisors (15696139).

1222232021 is a wasteful number, since it uses less digits than its factorization.

1222232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11635.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1222232021 is about 34960.4350802446. The cubic root of 1222232021 is about 1069.1809672561.

Adding to 1222232021 its reverse (1202322221), we get a palindrome (2424554242).

The spelling of 1222232021 in words is "one billion, two hundred twenty-two million, two hundred thirty-two thousand, twenty-one".