11321421320997 has 12 divisors (see below), whose sum is σ = 16880685554304. Its totient is φ = 7304142787560.

The previous prime is 11321421320939. The next prime is 11321421321013. The reversal of 11321421320997 is 79902312412311.

11321421320997 is a `hidden beast` number, since 1 + 1 + 3 + 214 + 21 + 320 + 9 + 97 = 666.

It is not a de Polignac number, because 11321421320997 - 2¹² = 11321421316901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321421320497) 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, 20289285243 + ... + 20289285800.

It is an arithmetic number, because the mean of its divisors is an integer number (1406723796192).

Almost surely, 2^{11321421320997} is an apocalyptic number.

It is an amenable number.

11321421320997 is a deficient number, since it is larger than the sum of its proper divisors (5559264233307).

11321421320997 is a wasteful number, since it uses less digits than its factorization.

11321421320997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40578571080 (or 40578571077 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 11321421320997 in words is "eleven trillion, three hundred twenty-one billion, four hundred twenty-one million, three hundred twenty thousand, nine hundred ninety-seven".