122022191 has 4 divisors (see below), whose sum is σ = 124998384. Its totient is φ = 119046000.

The previous prime is 122022181. The next prime is 122022211. The reversal of 122022191 is 191220221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191220221 = 103 ⋅1856507.

It is a cyclic number.

It is not a de Polignac number, because 122022191 - 2²² = 117827887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122022181) 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, 1488035 + ... + 1488116.

It is an arithmetic number, because the mean of its divisors is an integer number (31249596).

Almost surely, 2^122022191 is an apocalyptic number.

122022191 is a deficient number, since it is larger than the sum of its proper divisors (2976193).

122022191 is an equidigital number, since it uses as much as digits as its factorization.

122022191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976192.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 122022191 is about 11046.3655108818. The cubic root of 122022191 is about 495.9976356439.

It can be divided in two parts, 1220221 and 91, that multiplied together give a palindrome (111040111).

The spelling of 122022191 in words is "one hundred twenty-two million, twenty-two thousand, one hundred ninety-one".