1021221222331 has 8 divisors (see below), whose sum is σ = 1046147356800. Its totient is φ = 996295959360.

The previous prime is 1021221222289. The next prime is 1021221222377. The reversal of 1021221222331 is 1332221221201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021221222331 - 2⁹ = 1021221221819 is a prime.

It is a super-2 number, since 2×1021221222331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021221222431) 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, 2590825 + ... + 2958853.

It is an arithmetic number, because the mean of its divisors is an integer number (130768419600).

Almost surely, 2^{1021221222331} is an apocalyptic number.

1021221222331 is a deficient number, since it is larger than the sum of its proper divisors (24926134469).

1021221222331 is an equidigital number, since it uses as much as digits as its factorization.

1021221222331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435749.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1021221222331 its reverse (1332221221201), we get a palindrome (2353442443532).

The spelling of 1021221222331 in words is "one trillion, twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred thirty-one".