1002119495921 has 2 divisors, whose sum is σ = 1002119495922. Its totient is φ = 1002119495920.

The previous prime is 1002119495917. The next prime is 1002119495929. The reversal of 1002119495921 is 1295949112001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655476448225 + 346643047696 = 809615^2 + 588764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002119495921 - 2² = 1002119495917 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002119495929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501059747960 + 501059747961.

It is an arithmetic number, because the mean of its divisors is an integer number (501059747961).

Almost surely, 2^{1002119495921} is an apocalyptic number.

It is an amenable number.

1002119495921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002119495921 is an equidigital number, since it uses as much as digits as its factorization.

1002119495921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 1002119495921 in words is "one trillion, two billion, one hundred nineteen million, four hundred ninety-five thousand, nine hundred twenty-one".