21234224002 has 16 divisors (see below), whose sum is σ = 32842539072. Its totient is φ = 10288998000.

The previous prime is 21234223987. The next prime is 21234224021. The reversal of 21234224002 is 20042243212.

21234224002 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21234224002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553038 + ... + 590185.

It is an arithmetic number, because the mean of its divisors is an integer number (2052658692).

Almost surely, 2^21234224002 is an apocalyptic number.

21234224002 is a deficient number, since it is larger than the sum of its proper divisors (11608315070).

21234224002 is a wasteful number, since it uses less digits than its factorization.

21234224002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143513.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 21234224002 its reverse (20042243212), we get a palindrome (41276467214).

The spelling of 21234224002 in words is "twenty-one billion, two hundred thirty-four million, two hundred twenty-four thousand, two".