123021123 has 8 divisors (see below), whose sum is σ = 165719568. Its totient is φ = 81168384.

The previous prime is 123021121. The next prime is 123021127. The reversal of 123021123 is 321120321.

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

It is not a de Polignac number, because 123021123 - 2¹ = 123021121 is a prime.

It is a super-2 number, since 2×123021123² = 30268393408362258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123021121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211086 + ... + 211667.

It is an arithmetic number, because the mean of its divisors is an integer number (20714946).

Almost surely, 2^123021123 is an apocalyptic number.

123021123 is a deficient number, since it is larger than the sum of its proper divisors (42698445).

123021123 is an equidigital number, since it uses as much as digits as its factorization.

123021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422853.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123021123 is about 11091.4887639126. The cubic root of 123021123 is about 497.3474501767.

Adding to 123021123 its reverse (321120321), we get a palindrome (444141444).

The spelling of 123021123 in words is "one hundred twenty-three million, twenty-one thousand, one hundred twenty-three".