10332121991 has 2 divisors, whose sum is σ = 10332121992. Its totient is φ = 10332121990.

The previous prime is 10332121931. The next prime is 10332121997. The reversal of 10332121991 is 19912123301.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10332121991 - 2¹⁴ = 10332105607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10332121997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5166060995 + 5166060996.

It is an arithmetic number, because the mean of its divisors is an integer number (5166060996).

Almost surely, 2^10332121991 is an apocalyptic number.

10332121991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10332121991 is an equidigital number, since it uses as much as digits as its factorization.

10332121991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 10332121991 in words is "ten billion, three hundred thirty-two million, one hundred twenty-one thousand, nine hundred ninety-one".