121422021 has 8 divisors (see below), whose sum is σ = 185024064. Its totient is φ = 69384000.

The previous prime is 121422019. The next prime is 121422029. The reversal of 121422021 is 120224121.

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

It is not a de Polignac number, because 121422021 - 2¹ = 121422019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121422029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890980 + ... + 2891021.

It is an arithmetic number, because the mean of its divisors is an integer number (23128008).

Almost surely, 2^121422021 is an apocalyptic number.

It is an amenable number.

121422021 is a deficient number, since it is larger than the sum of its proper divisors (63602043).

121422021 is an equidigital number, since it uses as much as digits as its factorization.

121422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782011.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 121422021 is about 11019.1660755250. The cubic root of 121422021 is about 495.1831054047.

Adding to 121422021 its reverse (120224121), we get a palindrome (241646142).

The spelling of 121422021 in words is "one hundred twenty-one million, four hundred twenty-two thousand, twenty-one".