121022443 has 4 divisors (see below), whose sum is σ = 121108680. Its totient is φ = 120936208.

The previous prime is 121022417. The next prime is 121022453. The reversal of 121022443 is 344220121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344220121 = 7 ⋅49174303.

It is a cyclic number.

It is not a de Polignac number, because 121022443 - 2¹⁷ = 120891371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121022443.

It is not an unprimeable number, because it can be changed into a prime (121022413) 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, 40978 + ... + 43831.

It is an arithmetic number, because the mean of its divisors is an integer number (30277170).

Almost surely, 2^121022443 is an apocalyptic number.

121022443 is a deficient number, since it is larger than the sum of its proper divisors (86237).

121022443 is an equidigital number, since it uses as much as digits as its factorization.

121022443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86236.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121022443 is about 11001.0200890645. The cubic root of 121022443 is about 494.6393223354.

Adding to 121022443 its reverse (344220121), we get a palindrome (465242564).

It can be divided in two parts, 1210 and 22443, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 121022443 in words is "one hundred twenty-one million, twenty-two thousand, four hundred forty-three".