21230043002 has 32 divisors (see below), whose sum is σ = 37601964288. Its totient is φ = 8799636096.

The previous prime is 21230042987. The next prime is 21230043049. The reversal of 21230043002 is 20034003212.

It is a super-3 number, since 3×21230043002³ (a number of 32 digits) contains 333 as substring.

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, 36203 + ... + 209214.

It is an arithmetic number, because the mean of its divisors is an integer number (1175061384).

Almost surely, 2^21230043002 is an apocalyptic number.

21230043002 is a deficient number, since it is larger than the sum of its proper divisors (16371921286).

21230043002 is a wasteful number, since it uses less digits than its factorization.

21230043002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245630.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21230043002 its reverse (20034003212), we get a palindrome (41264046214).

The spelling of 21230043002 in words is "twenty-one billion, two hundred thirty million, forty-three thousand, two".