21110313142 has 16 divisors (see below), whose sum is σ = 33530943600. Its totient is φ = 9933435648.

The previous prime is 21110313137. The next prime is 21110313181. The reversal of 21110313142 is 24131301112.

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 7 ways as a sum of consecutive naturals, for example, 622234 + ... + 655282.

It is an arithmetic number, because the mean of its divisors is an integer number (2095683975).

Almost surely, 2^21110313142 is an apocalyptic number.

21110313142 is a deficient number, since it is larger than the sum of its proper divisors (12420630458).

21110313142 is a wasteful number, since it uses less digits than its factorization.

21110313142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51855.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21110313142 its reverse (24131301112), we get a palindrome (45241614254).

The spelling of 21110313142 in words is "twenty-one billion, one hundred ten million, three hundred thirteen thousand, one hundred forty-two".