20200122015 has 8 divisors (see below), whose sum is σ = 32320195248. Its totient is φ = 10773398400.

The previous prime is 20200121957. The next prime is 20200122017. The reversal of 20200122015 is 51022100202.

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

It is not a de Polignac number, because 20200122015 - 2⁶ = 20200121951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1346674801 = 20200122015 / (2 + 0 + 2 + 0 + 0 + 1 + 2 + 2 + 0 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 20200121985 and 20200122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200122017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673337386 + ... + 673337415.

It is an arithmetic number, because the mean of its divisors is an integer number (4040024406).

Almost surely, 2^20200122015 is an apocalyptic number.

20200122015 is a deficient number, since it is larger than the sum of its proper divisors (12120073233).

20200122015 is a wasteful number, since it uses less digits than its factorization.

20200122015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346674809.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 20200122015 its reverse (51022100202), we get a palindrome (71222222217).

The spelling of 20200122015 in words is "twenty billion, two hundred million, one hundred twenty-two thousand, fifteen".