1110021232981 has 2 divisors, whose sum is σ = 1110021232982. Its totient is φ = 1110021232980.

The previous prime is 1110021232979. The next prime is 1110021233023. The reversal of 1110021232981 is 1892321200111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692821504881 + 417199728100 = 832359^2 + 645910^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110021232981 - 2¹ = 1110021232979 is a prime.

It is a super-2 number, since 2×1110021232981² (a number of 25 digits) contains 22 as substring.

Together with 1110021232979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110021232381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555010616490 + 555010616491.

It is an arithmetic number, because the mean of its divisors is an integer number (555010616491).

Almost surely, 2^{1110021232981} is an apocalyptic number.

It is an amenable number.

1110021232981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110021232981 is an equidigital number, since it uses as much as digits as its factorization.

1110021232981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 1110021232981 in words is "one trillion, one hundred ten billion, twenty-one million, two hundred thirty-two thousand, nine hundred eighty-one".