21010322210 has 32 divisors (see below), whose sum is σ = 39474646272. Its totient is φ = 8036332480.

The previous prime is 21010322191. The next prime is 21010322231. The reversal of 21010322210 is 1222301012.

It is a happy number.

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, 887852 + ... + 911208.

It is an arithmetic number, because the mean of its divisors is an integer number (1233582696).

Almost surely, 2^21010322210 is an apocalyptic number.

21010322210 is a deficient number, since it is larger than the sum of its proper divisors (18464324062).

21010322210 is a wasteful number, since it uses less digits than its factorization.

21010322210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27298.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21010322210 its reverse (1222301012), we get a palindrome (22232623222).

The spelling of 21010322210 in words is "twenty-one billion, ten million, three hundred twenty-two thousand, two hundred ten".