21211430431034 has 8 divisors (see below), whose sum is σ = 31821939571188. Its totient is φ = 10604117240640.

The previous prime is 21211430431001. The next prime is 21211430431043. The reversal of 21211430431034 is 43013403411212.

It can be written as a sum of positive squares in 2 ways, for example, as 18367198775809 + 2844231655225 = 4285697^2 + 1686485^2 .

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 = 21211430430988 and 21211430431006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798970847 + ... + 798997394.

Almost surely, 2^{21211430431034} is an apocalyptic number.

21211430431034 is a deficient number, since it is larger than the sum of its proper divisors (10610509140154).

21211430431034 is a wasteful number, since it uses less digits than its factorization.

21211430431034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597974880.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21211430431034 its reverse (43013403411212), we get a palindrome (64224833842246).

The spelling of 21211430431034 in words is "twenty-one trillion, two hundred eleven billion, four hundred thirty million, four hundred thirty-one thousand, thirty-four".