1021111102373 has 2 divisors, whose sum is σ = 1021111102374. Its totient is φ = 1021111102372.

The previous prime is 1021111102189. The next prime is 1021111102391. The reversal of 1021111102373 is 3732011111201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 544877232964 + 476233869409 = 738158^2 + 690097^2 .

It is an emirp because it is prime and its reverse (3732011111201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021111102373 - 2³² = 1016816135077 is a prime.

It is a super-2 number, since 2×1021111102373² (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 (1021111102393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510555551186 + 510555551187.

It is an arithmetic number, because the mean of its divisors is an integer number (510555551187).

Almost surely, 2^{1021111102373} is an apocalyptic number.

It is an amenable number.

1021111102373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021111102373 is an equidigital number, since it uses as much as digits as its factorization.

1021111102373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 1021111102373 its reverse (3732011111201), we get a palindrome (4753122213574).

The spelling of 1021111102373 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred two thousand, three hundred seventy-three".