122203030213021 has 4 divisors (see below), whose sum is σ = 122226580619100. Its totient is φ = 122179479806944.

The previous prime is 122203030212947. The next prime is 122203030213057. The reversal of 122203030213021 is 120312030302221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53314457805625 + 68888572407396 = 7301675^2 + 8299914^2 .

It is a cyclic number.

It is not a de Polignac number, because 122203030213021 - 2⁹ = 122203030212509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122203030212983 and 122203030213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122203030213081) 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, 11775195256 + ... + 11775205633.

It is an arithmetic number, because the mean of its divisors is an integer number (30556645154775).

Almost surely, 2^{122203030213021} is an apocalyptic number.

It is an amenable number.

122203030213021 is a deficient number, since it is larger than the sum of its proper divisors (23550406079).

122203030213021 is an equidigital number, since it uses as much as digits as its factorization.

122203030213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550406078.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 122203030213021 its reverse (120312030302221), we get a palindrome (242515060515242).

The spelling of 122203030213021 in words is "one hundred twenty-two trillion, two hundred three billion, thirty million, two hundred thirteen thousand, twenty-one".