21223210320210 has 32 divisors (see below), whose sum is σ = 51896755805760. Its totient is φ = 5552739303488.

The previous prime is 21223210320203. The next prime is 21223210320269. The reversal of 21223210320210 is 1202301232212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6673963920 + ... + 6673967099.

It is an arithmetic number, because the mean of its divisors is an integer number (1621773618930).

Almost surely, 2^{21223210320210} is an apocalyptic number.

21223210320210 is an abundant number, since it is smaller than the sum of its proper divisors (30673545485550).

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

21223210320210 is a wasteful number, since it uses less digits than its factorization.

21223210320210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347931082.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21223210320210 its reverse (1202301232212), we get a palindrome (22425511552422).

The spelling of 21223210320210 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, two hundred ten".