20111111120010 has 32 divisors (see below), whose sum is σ = 48267405083520. Its totient is φ = 5362880921408.

The previous prime is 20111111119949. The next prime is 20111111120017. The reversal of 20111111120010 is 1002111111102.

It is not an unprimeable number, because it can be changed into a prime (20111111120017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3121182 + ... + 7068521.

It is an arithmetic number, because the mean of its divisors is an integer number (1508356408860).

Almost surely, 2^{20111111120010} is an apocalyptic number.

20111111120010 is an abundant number, since it is smaller than the sum of its proper divisors (28156293963510).

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

20111111120010 is a wasteful number, since it uses less digits than its factorization.

20111111120010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255502.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20111111120010 its reverse (1002111111102), we get a palindrome (21113222231112).

The spelling of 20111111120010 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty thousand, ten".