21223223210210 has 48 divisors (see below), whose sum is σ = 45472291862976. Its totient is φ = 7107311951712.

The previous prime is 21223223210201. The next prime is 21223223210239. The reversal of 21223223210210 is 1201232232212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 503614982 + ... + 503657121.

It is an arithmetic number, because the mean of its divisors is an integer number (947339413812).

Almost surely, 2^{21223223210210} is an apocalyptic number.

21223223210210 is an abundant number, since it is smaller than the sum of its proper divisors (24249068652766).

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

21223223210210 is a wasteful number, since it uses less digits than its factorization.

21223223210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007272167 (or 1007272160 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21223223210210 its reverse (1201232232212), we get a palindrome (22424455442422).

The spelling of 21223223210210 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred ten thousand, two hundred ten".