1021301111231 has 2 divisors, whose sum is σ = 1021301111232. Its totient is φ = 1021301111230.

The previous prime is 1021301111221. The next prime is 1021301111263. The reversal of 1021301111231 is 1321111031201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021301111231 is a prime.

It is a super-2 number, since 2×1021301111231² (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 (1021301111221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510650555615 + 510650555616.

It is an arithmetic number, because the mean of its divisors is an integer number (510650555616).

Almost surely, 2^{1021301111231} is an apocalyptic number.

1021301111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021301111231 is an equidigital number, since it uses as much as digits as its factorization.

1021301111231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1021301111231 its reverse (1321111031201), we get a palindrome (2342412142432).

The spelling of 1021301111231 in words is "one trillion, twenty-one billion, three hundred one million, one hundred eleven thousand, two hundred thirty-one".