21203200034 has 8 divisors (see below), whose sum is σ = 32404890780. Its totient is φ = 10401569776.

The previous prime is 21203200019. The next prime is 21203200063. The reversal of 21203200034 is 43000230212.

It can be written as a sum of positive squares in 2 ways, for example, as 20720738809 + 482461225 = 143947^2 + 21965^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21203199985 and 21203200021.

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, 100014989 + ... + 100015200.

Almost surely, 2^21203200034 is an apocalyptic number.

21203200034 is a deficient number, since it is larger than the sum of its proper divisors (11201690746).

21203200034 is a wasteful number, since it uses less digits than its factorization.

21203200034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200030244.

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

Adding to 21203200034 its reverse (43000230212), we get a palindrome (64203430246).

The spelling of 21203200034 in words is "twenty-one billion, two hundred three million, two hundred thousand, thirty-four".