1199573332421 has 2 divisors, whose sum is σ = 1199573332422. Its totient is φ = 1199573332420.

The previous prime is 1199573332411. The next prime is 1199573332453. The reversal of 1199573332421 is 1242333759911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 827490412225 + 372082920196 = 909665^2 + 609986^2 .

It is a cyclic number.

It is not a de Polignac number, because 1199573332421 - 2³⁸ = 924695425477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1199573332421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1199573332411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599786666210 + 599786666211.

It is an arithmetic number, because the mean of its divisors is an integer number (599786666211).

Almost surely, 2^{1199573332421} is an apocalyptic number.

It is an amenable number.

1199573332421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199573332421 is an equidigital number, since it uses as much as digits as its factorization.

1199573332421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The spelling of 1199573332421 in words is "one trillion, one hundred ninety-nine billion, five hundred seventy-three million, three hundred thirty-two thousand, four hundred twenty-one".