123222020021 has 8 divisors (see below), whose sum is σ = 125600116824. Its totient is φ = 120862575360.

The previous prime is 123222020003. The next prime is 123222020099. The reversal of 123222020021 is 120020222321.

It can be written as a sum of positive squares in 4 ways, for example, as 98227921 + 123123792100 = 9911^2 + 350890^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 123222020021 - 2⁶ = 123222019957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123222020821) 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, 4649696 + ... + 4676121.

It is an arithmetic number, because the mean of its divisors is an integer number (15700014603).

Almost surely, 2^123222020021 is an apocalyptic number.

It is an amenable number.

123222020021 is a deficient number, since it is larger than the sum of its proper divisors (2378096803).

123222020021 is an equidigital number, since it uses as much as digits as its factorization.

123222020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326071.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 123222020021 its reverse (120020222321), we get a palindrome (243242242342).

The spelling of 123222020021 in words is "one hundred twenty-three billion, two hundred twenty-two million, twenty thousand, twenty-one".