1220011021231 has 8 divisors (see below), whose sum is σ = 1223830850000. Its totient is φ = 1216192000320.

The previous prime is 1220011021217. The next prime is 1220011021249. The reversal of 1220011021231 is 1321201100221.

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 1220011021231 - 2¹⁵ = 1220010988463 is a prime.

It is a super-2 number, since 2×1220011021231² (a number of 25 digits) 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 (1220011022231) 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, 2897395 + ... + 3291643.

It is an arithmetic number, because the mean of its divisors is an integer number (152978856250).

Almost surely, 2^{1220011021231} is an apocalyptic number.

1220011021231 is a deficient number, since it is larger than the sum of its proper divisors (3819828769).

1220011021231 is an equidigital number, since it uses as much as digits as its factorization.

1220011021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403929.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1220011021231 its reverse (1321201100221), we get a palindrome (2541212121452).

The spelling of 1220011021231 in words is "one trillion, two hundred twenty billion, eleven million, twenty-one thousand, two hundred thirty-one".