21110132015 has 32 divisors (see below), whose sum is σ = 29664036864. Its totient is φ = 14121043200.

The previous prime is 21110132003. The next prime is 21110132053. The reversal of 21110132015 is 51023101112.

It is not a de Polignac number, because 21110132015 - 2¹⁰ = 21110130991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110131984 and 21110132002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 484115 + ... + 525915.

It is an arithmetic number, because the mean of its divisors is an integer number (927001152).

Almost surely, 2^21110132015 is an apocalyptic number.

21110132015 is a deficient number, since it is larger than the sum of its proper divisors (8553904849).

21110132015 is a wasteful number, since it uses less digits than its factorization.

21110132015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42167.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 21110132015 its reverse (51023101112), we get a palindrome (72133233127).

The spelling of 21110132015 in words is "twenty-one billion, one hundred ten million, one hundred thirty-two thousand, fifteen".