21106143115 has 16 divisors (see below), whose sum is σ = 25413600960. Its totient is φ = 16827489280.

The previous prime is 21106143049. The next prime is 21106143193. The reversal of 21106143115 is 51134160112.

It is not a de Polignac number, because 21106143115 - 2⁷ = 21106142987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21106143115.

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 15 ways as a sum of consecutive naturals, for example, 4379187 + ... + 4384003.

It is an arithmetic number, because the mean of its divisors is an integer number (1588350060).

Almost surely, 2^21106143115 is an apocalyptic number.

21106143115 is a deficient number, since it is larger than the sum of its proper divisors (4307457845).

21106143115 is a wasteful number, since it uses less digits than its factorization.

21106143115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 21106143115 in words is "twenty-one billion, one hundred six million, one hundred forty-three thousand, one hundred fifteen".