21401140330 has 8 divisors (see below), whose sum is σ = 38522052612. Its totient is φ = 8560456128.

The previous prime is 21401140309. The next prime is 21401140357. The reversal of 21401140330 is 3304110412.

It can be written as a sum of positive squares in 2 ways, for example, as 20544348889 + 856791441 = 143333^2 + 29271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21401140298 and 21401140307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070057007 + ... + 1070057026.

Almost surely, 2^21401140330 is an apocalyptic number.

21401140330 is a deficient number, since it is larger than the sum of its proper divisors (17120912282).

21401140330 is a wasteful number, since it uses less digits than its factorization.

21401140330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140114040.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21401140330 its reverse (3304110412), we get a palindrome (24705250742).

The spelling of 21401140330 in words is "twenty-one billion, four hundred one million, one hundred forty thousand, three hundred thirty".