122219091 has 8 divisors (see below), whose sum is σ = 181065360. Its totient is φ = 81479376.

The previous prime is 122219089. The next prime is 122219093. The reversal of 122219091 is 190912221.

It is an interprime number because it is at equal distance from previous prime (122219089) and next prime (122219093).

It is not a de Polignac number, because 122219091 - 2¹ = 122219089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4526633 = 122219091 / (1 + 2 + 2 + 2 + 1 + 9 + 0 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (122219093) 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, 2263290 + ... + 2263343.

It is an arithmetic number, because the mean of its divisors is an integer number (22633170).

Almost surely, 2^122219091 is an apocalyptic number.

122219091 is a deficient number, since it is larger than the sum of its proper divisors (58846269).

122219091 is an equidigital number, since it uses as much as digits as its factorization.

122219091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526642 (or 4526636 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 122219091 is about 11055.2743520910. The cubic root of 122219091 is about 496.2642796323.

It can be divided in two parts, 12221 and 9091, that multiplied together give a palindrome (111101111).

The spelling of 122219091 in words is "one hundred twenty-two million, two hundred nineteen thousand, ninety-one".