1222231331021 has 8 divisors (see below), whose sum is σ = 1237015403904. Its totient is φ = 1207448648640.

The previous prime is 1222231330981. The next prime is 1222231331051. The reversal of 1222231331021 is 1201331322221.

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

It is not a de Polignac number, because 1222231331021 - 2²⁶ = 1222164222157 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 (1222231331051) 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, 1478645 + ... + 2151941.

It is an arithmetic number, because the mean of its divisors is an integer number (154626925488).

Almost surely, 2^{1222231331021} is an apocalyptic number.

It is an amenable number.

1222231331021 is a deficient number, since it is larger than the sum of its proper divisors (14784072883).

1222231331021 is an equidigital number, since it uses as much as digits as its factorization.

1222231331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695251.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1222231331021 its reverse (1201331322221), we get a palindrome (2423562653242).

The spelling of 1222231331021 in words is "one trillion, two hundred twenty-two billion, two hundred thirty-one million, three hundred thirty-one thousand, twenty-one".