21022020110000 has 400 divisors, whose sum is σ = 62784346377984. Its totient is φ = 6637977216000.

The previous prime is 21022020109943. The next prime is 21022020110129. The reversal of 21022020110000 is 1102022012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (400).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 403103927 + ... + 403156073.

Almost surely, 2^{21022020110000} is an apocalyptic number.

21022020110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21022020110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31392173188992).

21022020110000 is an abundant number, since it is smaller than the sum of its proper divisors (41762326267984).

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

21022020110000 is a wasteful number, since it uses less digits than its factorization.

21022020110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52638 (or 52617 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21022020110000 its reverse (1102022012), we get a palindrome (21023122132012).

The spelling of 21022020110000 in words is "twenty-one trillion, twenty-two billion, twenty million, one hundred ten thousand".