1021187083373 has 2 divisors, whose sum is σ = 1021187083374. Its totient is φ = 1021187083372.

The previous prime is 1021187083369. The next prime is 1021187083421. The reversal of 1021187083373 is 3733807811201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635548567369 + 385638516004 = 797213^2 + 620998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021187083373 - 2² = 1021187083369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021187082373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510593541686 + 510593541687.

It is an arithmetic number, because the mean of its divisors is an integer number (510593541687).

Almost surely, 2^{1021187083373} is an apocalyptic number.

It is an amenable number.

1021187083373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021187083373 is an equidigital number, since it uses as much as digits as its factorization.

1021187083373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 1021187083373 in words is "one trillion, twenty-one billion, one hundred eighty-seven million, eighty-three thousand, three hundred seventy-three".