20111120132010 has 256 divisors, whose sum is σ = 50508799672320. Its totient is φ = 5119185899520.

The previous prime is 20111120132009. The next prime is 20111120132029. The reversal of 20111120132010 is 1023102111102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20584564642 + ... + 20584565618.

It is an arithmetic number, because the mean of its divisors is an integer number (197299998720).

Almost surely, 2^{20111120132010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111120132010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25254399836160).

20111120132010 is an abundant number, since it is smaller than the sum of its proper divisors (30397679540310).

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

20111120132010 is a wasteful number, since it uses less digits than its factorization.

20111120132010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20111120132010 its reverse (1023102111102), we get a palindrome (21134222243112).

The spelling of 20111120132010 in words is "twenty trillion, one hundred eleven billion, one hundred twenty million, one hundred thirty-two thousand, ten".