21223201010 has 32 divisors (see below), whose sum is σ = 43486595712. Its totient is φ = 7381982080.

The previous prime is 21223201007. The next prime is 21223201049. The reversal of 21223201010 is 1010232212.

It is a happy number.

It is a super-3 number, since 3×21223201010³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 4191779 + ... + 4196838.

It is an arithmetic number, because the mean of its divisors is an integer number (1358956116).

Almost surely, 2^21223201010 is an apocalyptic number.

21223201010 is an abundant number, since it is smaller than the sum of its proper divisors (22263394702).

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

21223201010 is a wasteful number, since it uses less digits than its factorization.

21223201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8388658.

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

Adding to 21223201010 its reverse (1010232212), we get a palindrome (22233433222).

The spelling of 21223201010 in words is "twenty-one billion, two hundred twenty-three million, two hundred one thousand, ten".