20015120211006 has 16 divisors (see below), whose sum is σ = 40062601180944. Its totient is φ = 6666313277184.

The previous prime is 20015120211001. The next prime is 20015120211007. The reversal of 20015120211006 is 60011202151002.

It is a super-2 number, since 2×20015120211006² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015120211001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348356915 + ... + 1348371758.

It is an arithmetic number, because the mean of its divisors is an integer number (2503912573809).

Almost surely, 2^{20015120211006} is an apocalyptic number.

20015120211006 is an abundant number, since it is smaller than the sum of its proper divisors (20047480969938).

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

20015120211006 is a wasteful number, since it uses less digits than its factorization.

20015120211006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696729915.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 20015120211006 its reverse (60011202151002), we get a palindrome (80026322362008).

The spelling of 20015120211006 in words is "twenty trillion, fifteen billion, one hundred twenty million, two hundred eleven thousand, six".