21061011334 has 8 divisors (see below), whose sum is σ = 34463473128. Its totient is φ = 9573186960.

The previous prime is 21061011311. The next prime is 21061011337. The reversal of 21061011334 is 43311016012.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 957318697 = 21061011334 / (2 + 1 + 0 + 6 + 1 + 0 + 1 + 1 + 3 + 3 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21061011337) 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, 478659327 + ... + 478659370.

It is an arithmetic number, because the mean of its divisors is an integer number (4307934141).

Almost surely, 2^21061011334 is an apocalyptic number.

21061011334 is a deficient number, since it is larger than the sum of its proper divisors (13402461794).

21061011334 is a wasteful number, since it uses less digits than its factorization.

21061011334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957318710.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21061011334 its reverse (43311016012), we get a palindrome (64372027346).

The spelling of 21061011334 in words is "twenty-one billion, sixty-one million, eleven thousand, three hundred thirty-four".