122115151 has 4 divisors (see below), whose sum is σ = 122137312. Its totient is φ = 122092992.

The previous prime is 122115121. The next prime is 122115157. The reversal of 122115151 is 151511221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122115151 is a prime.

It is a super-2 number, since 2×122115151² = 29824220207505602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122115157) 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, 4330 + ... + 16216.

It is an arithmetic number, because the mean of its divisors is an integer number (30534328).

Almost surely, 2^122115151 is an apocalyptic number.

122115151 is a deficient number, since it is larger than the sum of its proper divisors (22161).

122115151 is a wasteful number, since it uses less digits than its factorization.

122115151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22160.

The product of its digits is 100, while the sum is 19.

The square root of 122115151 is about 11050.5724286120. The cubic root of 122115151 is about 496.1235587403.

Adding to 122115151 its reverse (151511221), we get a palindrome (273626372).

The spelling of 122115151 in words is "one hundred twenty-two million, one hundred fifteen thousand, one hundred fifty-one".