122210021 has 8 divisors (see below), whose sum is σ = 123325440. Its totient is φ = 121100112.

The previous prime is 122209993. The next prime is 122210027. The reversal of 122210021 is 120012221.

It is a happy number.

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 122210021 - 2¹⁸ = 121947877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122209984 and 122210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122210027) 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, 52151 + ... + 54443.

It is an arithmetic number, because the mean of its divisors is an integer number (15415680).

Almost surely, 2^122210021 is an apocalyptic number.

It is an amenable number.

122210021 is a deficient number, since it is larger than the sum of its proper divisors (1115419).

122210021 is a wasteful number, since it uses less digits than its factorization.

122210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 122210021 is about 11054.8641330412. The cubic root of 122210021 is about 496.2520032405.

Adding to 122210021 its reverse (120012221), we get a palindrome (242222242).

The spelling of 122210021 in words is "one hundred twenty-two million, two hundred ten thousand, twenty-one".