122030110021 has 4 divisors (see below), whose sum is σ = 122108891500. Its totient is φ = 121951328544.

The previous prime is 122030110009. The next prime is 122030110031. The reversal of 122030110021 is 120011030221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120011030221 = 173 ⋅693705377.

It can be written as a sum of positive squares in 2 ways, for example, as 29744176225 + 92285933796 = 172465^2 + 303786^2 .

It is a cyclic number.

It is not a de Polignac number, because 122030110021 - 2⁵ = 122030109989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122030109983 and 122030110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122030110031) 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, 39388416 + ... + 39391513.

It is an arithmetic number, because the mean of its divisors is an integer number (30527222875).

Almost surely, 2^122030110021 is an apocalyptic number.

It is an amenable number.

122030110021 is a deficient number, since it is larger than the sum of its proper divisors (78781479).

122030110021 is an equidigital number, since it uses as much as digits as its factorization.

122030110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78781478.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 122030110021 its reverse (120011030221), we get a palindrome (242041140242).

The spelling of 122030110021 in words is "one hundred twenty-two billion, thirty million, one hundred ten thousand, twenty-one".