21065011330 has 16 divisors (see below), whose sum is σ = 41364022464. Its totient is φ = 7660004080.

The previous prime is 21065011301. The next prime is 21065011339. The reversal of 21065011330 is 3311056012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (21065011339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95749942 + ... + 95750161.

It is an arithmetic number, because the mean of its divisors is an integer number (2585251404).

Almost surely, 2^21065011330 is an apocalyptic number.

21065011330 is a deficient number, since it is larger than the sum of its proper divisors (20299011134).

21065011330 is a wasteful number, since it uses less digits than its factorization.

21065011330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191500121.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 21065011330 its reverse (3311056012), we get a palindrome (24376067342).

The spelling of 21065011330 in words is "twenty-one billion, sixty-five million, eleven thousand, three hundred thirty".