123198022 has 4 divisors (see below), whose sum is σ = 184797036. Its totient is φ = 61599010.

The previous prime is 123198017. The next prime is 123198029. The reversal of 123198022 is 220891321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123198029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30799504 + ... + 30799507.

It is an arithmetic number, because the mean of its divisors is an integer number (46199259).

Almost surely, 2^123198022 is an apocalyptic number.

123198022 is a deficient number, since it is larger than the sum of its proper divisors (61599014).

123198022 is an equidigital number, since it uses as much as digits as its factorization.

123198022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61599013.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 123198022 is about 11099.4604373366. The cubic root of 123198022 is about 497.5857239721.

The spelling of 123198022 in words is "one hundred twenty-three million, one hundred ninety-eight thousand, twenty-two".