21534201112 has 64 divisors (see below), whose sum is σ = 41372791200. Its totient is φ = 10505702400.

The previous prime is 21534201107. The next prime is 21534201127. The reversal of 21534201112 is 21110243512.

It is a congruent number.

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, 20143714 + ... + 20144782.

Almost surely, 2^21534201112 is an apocalyptic number.

It is an amenable number.

21534201112 is a deficient number, since it is larger than the sum of its proper divisors (19838590088).

21534201112 is a wasteful number, since it uses less digits than its factorization.

21534201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21534201112 its reverse (21110243512), we get a palindrome (42644444624).

The spelling of 21534201112 in words is "twenty-one billion, five hundred thirty-four million, two hundred one thousand, one hundred twelve".