122191018 has 8 divisors (see below), whose sum is σ = 184730112. Its totient is φ = 60614316.

The previous prime is 122191001. The next prime is 122191021. The reversal of 122191018 is 810191221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 122190983 and 122191001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240280 + ... + 240787.

It is an arithmetic number, because the mean of its divisors is an integer number (23091264).

Almost surely, 2^122191018 is an apocalyptic number.

122191018 is a deficient number, since it is larger than the sum of its proper divisors (62539094).

122191018 is a wasteful number, since it uses less digits than its factorization.

122191018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481196.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 122191018 is about 11054.0046137135. The cubic root of 122191018 is about 496.2262804027.

The spelling of 122191018 in words is "one hundred twenty-two million, one hundred ninety-one thousand, eighteen".