122115211 has 4 divisors (see below), whose sum is σ = 127424592. Its totient is φ = 116805832.

The previous prime is 122115193. The next prime is 122115221. The reversal of 122115211 is 112511221.

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

It is a cyclic number.

It is not a de Polignac number, because 122115211 - 2¹³ = 122107019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122115221) 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, 2654656 + ... + 2654701.

It is an arithmetic number, because the mean of its divisors is an integer number (31856148).

Almost surely, 2^122115211 is an apocalyptic number.

122115211 is a deficient number, since it is larger than the sum of its proper divisors (5309381).

122115211 is an equidigital number, since it uses as much as digits as its factorization.

122115211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5309380.

The product of its digits is 40, while the sum is 16.

The square root of 122115211 is about 11050.5751434032. The cubic root of 122115211 is about 496.1236399953.

Adding to 122115211 its reverse (112511221), we get a palindrome (234626432).

The spelling of 122115211 in words is "one hundred twenty-two million, one hundred fifteen thousand, two hundred eleven".