21201022100010 has 64 divisors (see below), whose sum is σ = 52533352120320. Its totient is φ = 5470238840640.

The previous prime is 21201022099981. The next prime is 21201022100017. The reversal of 21201022100010 is 1000122010212.

It is a super-2 number, since 2×21201022100010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21201022100017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3067369 + ... + 7197971.

It is an arithmetic number, because the mean of its divisors is an integer number (820833626880).

Almost surely, 2^{21201022100010} is an apocalyptic number.

21201022100010 is an abundant number, since it is smaller than the sum of its proper divisors (31332330020310).

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

21201022100010 is a wasteful number, since it uses less digits than its factorization.

21201022100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136163.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21201022100010 its reverse (1000122010212), we get a palindrome (22201144110222).

The spelling of 21201022100010 in words is "twenty-one trillion, two hundred one billion, twenty-two million, one hundred thousand, ten".