122020615 has 4 divisors (see below), whose sum is σ = 146424744. Its totient is φ = 97616488.

The previous prime is 122020573. The next prime is 122020637. The reversal of 122020615 is 516020221.

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 122020615 - 2²³ = 113632007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122020592 and 122020601.

It is a congruent number.

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, 12202057 + ... + 12202066.

It is an arithmetic number, because the mean of its divisors is an integer number (36606186).

Almost surely, 2^122020615 is an apocalyptic number.

122020615 is a deficient number, since it is larger than the sum of its proper divisors (24404129).

122020615 is an equidigital number, since it uses as much as digits as its factorization.

122020615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24404128.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 122020615 is about 11046.2941749711. The cubic root of 122020615 is about 495.9955002518.

Adding to 122020615 its reverse (516020221), we get a palindrome (638040836).

It can be divided in two parts, 1220206 and 15, that added together give a palindrome (1220221).

The spelling of 122020615 in words is "one hundred twenty-two million, twenty thousand, six hundred fifteen".