21434211110 has 64 divisors (see below), whose sum is σ = 42626896704. Its totient is φ = 7711372800.

The previous prime is 21434211103. The next prime is 21434211119. The reversal of 21434211110 is 1111243412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434211119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835880 + ... + 861140.

It is an arithmetic number, because the mean of its divisors is an integer number (666045261).

Almost surely, 2^21434211110 is an apocalyptic number.

21434211110 is a deficient number, since it is larger than the sum of its proper divisors (21192685594).

21434211110 is a wasteful number, since it uses less digits than its factorization.

21434211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25449.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21434211110 its reverse (1111243412), we get a palindrome (22545454522).

The spelling of 21434211110 in words is "twenty-one billion, four hundred thirty-four million, two hundred eleven thousand, one hundred ten".