122212021 has 8 divisors (see below), whose sum is σ = 125967744. Its totient is φ = 118493280.

The previous prime is 122212007. The next prime is 122212043. The reversal of 122212021 is 120212221.

It is a happy number.

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

It is not a de Polignac number, because 122212021 - 2⁵ = 122211989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122211992 and 122212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212081) 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, 2461 + ... + 15826.

It is an arithmetic number, because the mean of its divisors is an integer number (15745968).

Almost surely, 2^122212021 is an apocalyptic number.

It is an amenable number.

122212021 is a deficient number, since it is larger than the sum of its proper divisors (3755723).

122212021 is a wasteful number, since it uses less digits than its factorization.

122212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18491.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 122212021 is about 11054.9545905897. The cubic root of 122212021 is about 496.2547103250.

Adding to 122212021 its reverse (120212221), we get a palindrome (242424242).

The spelling of 122212021 in words is "one hundred twenty-two million, two hundred twelve thousand, twenty-one".