21146114056 has 16 divisors (see below), whose sum is σ = 39650510700. Its totient is φ = 10572644544.

The previous prime is 21146114053. The next prime is 21146114057. The reversal of 21146114056 is 65041164112.

It can be written as a sum of positive squares in 2 ways, for example, as 16891161156 + 4254952900 = 129966^2 + 65230^2 .

It is a super-2 number, since 2×21146114056² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21146114053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353490 + ... + 408958.

Almost surely, 2^21146114056 is an apocalyptic number.

It is an amenable number.

21146114056 is a deficient number, since it is larger than the sum of its proper divisors (18504396644).

21146114056 is a wasteful number, since it uses less digits than its factorization.

21146114056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103128 (or 103124 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 21146114056 its reverse (65041164112), we get a palindrome (86187278168).

The spelling of 21146114056 in words is "twenty-one billion, one hundred forty-six million, one hundred fourteen thousand, fifty-six".