21222020010010 has 32 divisors (see below), whose sum is σ = 39091196833920. Its totient is φ = 8290715673408.

The previous prime is 21222020009923. The next prime is 21222020010019. The reversal of 21222020010010 is 1001002022212.

It is a happy number.

It is a super-3 number, since 3×21222020010010³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222020010019) 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, 3260796 + ... + 7285384.

It is an arithmetic number, because the mean of its divisors is an integer number (1221599901060).

Almost surely, 2^{21222020010010} is an apocalyptic number.

21222020010010 is a deficient number, since it is larger than the sum of its proper divisors (17869176823910).

21222020010010 is a wasteful number, since it uses less digits than its factorization.

21222020010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036902.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21222020010010 its reverse (1001002022212), we get a palindrome (22223022032222).

The spelling of 21222020010010 in words is "twenty-one trillion, two hundred twenty-two billion, twenty million, ten thousand, ten".