20021013115 has 8 divisors (see below), whose sum is σ = 24034273920. Its totient is φ = 16010771712.

The previous prime is 20021013107. The next prime is 20021013139. The reversal of 20021013115 is 51131012002.

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

It is a cyclic number.

It is not a de Polignac number, because 20021013115 - 2³ = 20021013107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740235 + ... + 766804.

It is an arithmetic number, because the mean of its divisors is an integer number (3004284240).

Almost surely, 2^20021013115 is an apocalyptic number.

20021013115 is a deficient number, since it is larger than the sum of its proper divisors (4013260805).

20021013115 is a wasteful number, since it uses less digits than its factorization.

20021013115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509701.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 20021013115 its reverse (51131012002), we get a palindrome (71152025117).

The spelling of 20021013115 in words is "twenty billion, twenty-one million, thirteen thousand, one hundred fifteen".