1021120220231 has 2 divisors, whose sum is σ = 1021120220232. Its totient is φ = 1021120220230.

The previous prime is 1021120220221. The next prime is 1021120220317. The reversal of 1021120220231 is 1320220211201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021120220231 is a prime.

It is a super-2 number, since 2×1021120220231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021120220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510560110115 + 510560110116.

It is an arithmetic number, because the mean of its divisors is an integer number (510560110116).

Almost surely, 2^{1021120220231} is an apocalyptic number.

1021120220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021120220231 is an equidigital number, since it uses as much as digits as its factorization.

1021120220231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021120220231 its reverse (1320220211201), we get a palindrome (2341340431432).

The spelling of 1021120220231 in words is "one trillion, twenty-one billion, one hundred twenty million, two hundred twenty thousand, two hundred thirty-one".