122013720 has 48 divisors (see below), whose sum is σ = 396545760. Its totient is φ = 32536896.

The previous prime is 122013691. The next prime is 122013761. The reversal of 122013720 is 27310221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 122013693 and 122013702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169104 + ... + 169823.

It is an arithmetic number, because the mean of its divisors is an integer number (8261370).

Almost surely, 2^122013720 is an apocalyptic number.

122013720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122013720 is an abundant number, since it is smaller than the sum of its proper divisors (274532040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122013720 is a wasteful number, since it uses less digits than its factorization.

122013720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338944 (or 338937 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 122013720 is about 11045.9820749447. The cubic root of 122013720 is about 495.9861576956.

Adding to 122013720 its reverse (27310221), we get a palindrome (149323941).

The spelling of 122013720 in words is "one hundred twenty-two million, thirteen thousand, seven hundred twenty".