20015220011024 has 120 divisors (see below), whose sum is σ = 45879904792800. Its totient is φ = 8431738882560.

The previous prime is 20015220010913. The next prime is 20015220011041. The reversal of 20015220011024 is 42011002251002.

It is a junction number, because it is equal to n+sod(n) for n = 20015220010987 and 20015220011005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 805720844 + ... + 805745684.

It is an arithmetic number, because the mean of its divisors is an integer number (382332539940).

Almost surely, 2^{20015220011024} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20015220011024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22939952396400).

20015220011024 is an abundant number, since it is smaller than the sum of its proper divisors (25864684781776).

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

20015220011024 is a wasteful number, since it uses less digits than its factorization.

20015220011024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42341 (or 42328 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20015220011024 its reverse (42011002251002), we get a palindrome (62026222262026).

The spelling of 20015220011024 in words is "twenty trillion, fifteen billion, two hundred twenty million, eleven thousand, twenty-four".