122213555 has 4 divisors (see below), whose sum is σ = 146656272. Its totient is φ = 97770840.

The previous prime is 122213551. The next prime is 122213557. The reversal of 122213555 is 555312221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122213555 - 2² = 122213551 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (122213551) 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, 12221351 + ... + 12221360.

It is an arithmetic number, because the mean of its divisors is an integer number (36664068).

Almost surely, 2^122213555 is an apocalyptic number.

122213555 is a deficient number, since it is larger than the sum of its proper divisors (24442717).

122213555 is an equidigital number, since it uses as much as digits as its factorization.

122213555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24442716.

The product of its digits is 3000, while the sum is 26.

The square root of 122213555 is about 11055.0239710278. The cubic root of 122213555 is about 496.2567866389.

Adding to 122213555 its reverse (555312221), we get a palindrome (677525776).

The spelling of 122213555 in words is "one hundred twenty-two million, two hundred thirteen thousand, five hundred fifty-five".