1321901020359 has 12 divisors (see below), whose sum is σ = 1909422600696. Its totient is φ = 881262724272.

The previous prime is 1321901020351. The next prime is 1321901020381. The reversal of 1321901020359 is 9530201091231.

1321901020359 is a `hidden beast` number, since 13 + 2 + 190 + 102 + 0 + 359 = 666.

It is not a de Polignac number, because 1321901020359 - 2³ = 1321901020351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321901020351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2904412 + ... + 3328574.

It is an arithmetic number, because the mean of its divisors is an integer number (159118550058).

Almost surely, 2^{1321901020359} is an apocalyptic number.

1321901020359 is a deficient number, since it is larger than the sum of its proper divisors (587521580337).

1321901020359 is a wasteful number, since it uses less digits than its factorization.

1321901020359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770446 (or 770443 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The spelling of 1321901020359 in words is "one trillion, three hundred twenty-one billion, nine hundred one million, twenty thousand, three hundred fifty-nine".