21011000201120 has 48 divisors (see below), whose sum is σ = 49639068622080. Its totient is φ = 8404301769984.

The previous prime is 21011000201111. The next prime is 21011000201123. The reversal of 21011000201120 is 2110200011012.

It is not an unprimeable number, because it can be changed into a prime (21011000201123) 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, 13815461 + ... + 15260699.

It is an arithmetic number, because the mean of its divisors is an integer number (1034147262960).

Almost surely, 2^{21011000201120} is an apocalyptic number.

21011000201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21011000201120 is an abundant number, since it is smaller than the sum of its proper divisors (28628068420960).

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

21011000201120 is a wasteful number, since it uses less digits than its factorization.

21011000201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536117 (or 1536109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21011000201120 its reverse (2110200011012), we get a palindrome (23121200212132).

The spelling of 21011000201120 in words is "twenty-one trillion, eleven billion, two hundred one thousand, one hundred twenty".