21021201110000 has 200 divisors, whose sum is σ = 62639301182304. Its totient is φ = 6652863360000.

The previous prime is 21021201109981. The next prime is 21021201110047. The reversal of 21021201110000 is 1110212012.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×21021201110000² (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 39 ways as a sum of consecutive naturals, for example, 10640111 + ... + 12460110.

Almost surely, 2^{21021201110000} is an apocalyptic number.

21021201110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21021201110000 is an abundant number, since it is smaller than the sum of its proper divisors (41618100072304).

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

21021201110000 is a wasteful number, since it uses less digits than its factorization.

21021201110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23100269 (or 23100248 counting only the distinct ones).

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

Adding to 21021201110000 its reverse (1110212012), we get a palindrome (21022311322012).

The spelling of 21021201110000 in words is "twenty-one trillion, twenty-one billion, two hundred one million, one hundred ten thousand".