196392221021 has 4 divisors (see below), whose sum is σ = 196397891712. Its totient is φ = 196386550332.

The previous prime is 196392220967. The next prime is 196392221071. The reversal of 196392221021 is 120122293691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 196392221021 - 2²² = 196388026717 is a prime.

It is a super-2 number, since 2×196392221021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196392221071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783075 + ... + 2852768.

It is an arithmetic number, because the mean of its divisors is an integer number (49099472928).

Almost surely, 2^196392221021 is an apocalyptic number.

It is an amenable number.

196392221021 is a deficient number, since it is larger than the sum of its proper divisors (5670691).

196392221021 is an equidigital number, since it uses as much as digits as its factorization.

196392221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670690.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 196392221021 in words is "one hundred ninety-six billion, three hundred ninety-two million, two hundred twenty-one thousand, twenty-one".