122120002210021 has 8 divisors (see below), whose sum is σ = 122211261465080. Its totient is φ = 122028761469888.

The previous prime is 122120002210007. The next prime is 122120002210033. The reversal of 122120002210021 is 120012200021221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54733733150625 + 67386269059396 = 7398225^2 + 8208914^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120002210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122120002209977 and 122120002210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120002210321) 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, 8581795 + ... + 17829391.

It is an arithmetic number, because the mean of its divisors is an integer number (15276407683135).

Almost surely, 2^{122120002210021} is an apocalyptic number.

It is an amenable number.

122120002210021 is a deficient number, since it is larger than the sum of its proper divisors (91259255059).

122120002210021 is an equidigital number, since it uses as much as digits as its factorization.

122120002210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257463.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122120002210021 its reverse (120012200021221), we get a palindrome (242132202231242).

The spelling of 122120002210021 in words is "one hundred twenty-two trillion, one hundred twenty billion, two million, two hundred ten thousand, twenty-one".