21234022010 has 8 divisors (see below), whose sum is σ = 38221239636. Its totient is φ = 8493608800.

The previous prime is 21234022003. The next prime is 21234022021. The reversal of 21234022010 is 1022043212.

It can be written as a sum of positive squares in 2 ways, for example, as 21154829809 + 79192201 = 145447^2 + 8899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21234022010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061701091 + ... + 1061701110.

Almost surely, 2^21234022010 is an apocalyptic number.

21234022010 is a deficient number, since it is larger than the sum of its proper divisors (16987217626).

21234022010 is a wasteful number, since it uses less digits than its factorization.

21234022010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123402208.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21234022010 its reverse (1022043212), we get a palindrome (22256065222).

The spelling of 21234022010 in words is "twenty-one billion, two hundred thirty-four million, twenty-two thousand, ten".