21022331197 has 8 divisors (see below), whose sum is σ = 24073289856. Its totient is φ = 17983314672.

The previous prime is 21022331173. The next prime is 21022331203. The reversal of 21022331197 is 79113322012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022331197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022335197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2981758 + ... + 2988799.

It is an arithmetic number, because the mean of its divisors is an integer number (3009161232).

Almost surely, 2^21022331197 is an apocalyptic number.

It is an amenable number.

21022331197 is a deficient number, since it is larger than the sum of its proper divisors (3050958659).

21022331197 is an equidigital number, since it uses as much as digits as its factorization.

21022331197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971067.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 21022331197 in words is "twenty-one billion, twenty-two million, three hundred thirty-one thousand, one hundred ninety-seven".