20110211202015 has 24 divisors (see below), whose sum is σ = 38026581182928. Its totient is φ = 9750405431040.

The previous prime is 20110211202001. The next prime is 20110211202031. The reversal of 20110211202015 is 51020211201102.

It is a de Polignac number, because none of the positive numbers 2^k-20110211202015 is a prime.

It is a super-2 number, since 2×20110211202015² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 20313344154 + ... + 20313345143.

It is an arithmetic number, because the mean of its divisors is an integer number (1584440882622).

Almost surely, 2^{20110211202015} is an apocalyptic number.

20110211202015 is a deficient number, since it is larger than the sum of its proper divisors (17916369980913).

20110211202015 is a wasteful number, since it uses less digits than its factorization.

20110211202015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40626689319 (or 40626689316 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 20110211202015 its reverse (51020211201102), we get a palindrome (71130422403117).

The spelling of 20110211202015 in words is "twenty trillion, one hundred ten billion, two hundred eleven million, two hundred two thousand, fifteen".