122203021 has 4 divisors (see below), whose sum is σ = 129391452. Its totient is φ = 115014592.

The previous prime is 122202973. The next prime is 122203027. The reversal of 122203021 is 120302221.

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 45832900 + 76370121 = 6770^2 + 8739^2 .

It is a cyclic number.

It is not a de Polignac number, because 122203021 - 2¹⁵ = 122170253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122202992 and 122203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122203027) 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, 3594190 + ... + 3594223.

It is an arithmetic number, because the mean of its divisors is an integer number (32347863).

Almost surely, 2^122203021 is an apocalyptic number.

It is an amenable number.

122203021 is a deficient number, since it is larger than the sum of its proper divisors (7188431).

122203021 is an equidigital number, since it uses as much as digits as its factorization.

122203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188430.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 122203021 is about 11054.5475257923. The cubic root of 122203021 is about 496.2425282118.

Adding to 122203021 its reverse (120302221), we get a palindrome (242505242).

The spelling of 122203021 in words is "one hundred twenty-two million, two hundred three thousand, twenty-one".