21011022311000 has 64 divisors (see below), whose sum is σ = 49167772580160. Its totient is φ = 8404070400000.

The previous prime is 21011022310981. The next prime is 21011022311003. The reversal of 21011022311000 is 11322011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011022311003) 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, 25190645 + ... + 26011355.

It is an arithmetic number, because the mean of its divisors is an integer number (768246446565).

Almost surely, 2^{21011022311000} is an apocalyptic number.

21011022311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21011022311000 is an abundant number, since it is smaller than the sum of its proper divisors (28156750269160).

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

21011022311000 is a wasteful number, since it uses less digits than its factorization.

21011022311000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846333 (or 846319 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21011022311000 its reverse (11322011012), we get a palindrome (21022344322012).

The spelling of 21011022311000 in words is "twenty-one trillion, eleven billion, twenty-two million, three hundred eleven thousand".