21010011222200 has 384 divisors, whose sum is σ = 65715668928000. Its totient is φ = 6032933222400.

The previous prime is 21010011222133. The next prime is 21010011222203. The reversal of 21010011222200 is 222211001012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010011222203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 101798711 + ... + 102004889.

It is an arithmetic number, because the mean of its divisors is an integer number (171134554500).

Almost surely, 2^{21010011222200} is an apocalyptic number.

21010011222200 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 21010011222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32857834464000).

21010011222200 is an abundant number, since it is smaller than the sum of its proper divisors (44705657705800).

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

21010011222200 is a wasteful number, since it uses less digits than its factorization.

21010011222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206735 (or 206726 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21010011222200 its reverse (222211001012), we get a palindrome (21232222223212).

The spelling of 21010011222200 in words is "twenty-one trillion, ten billion, eleven million, two hundred twenty-two thousand, two hundred".