21113150330061 has 8 divisors (see below), whose sum is σ = 31278741229760. Its totient is φ = 14075433553356.

The previous prime is 21113150330033. The next prime is 21113150330081. The reversal of 21113150330061 is 16003305131112.

It is a happy number.

21113150330061 is a `hidden beast` number, since 2 + 1 + 11 + 315 + 0 + 330 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 21113150330061 - 2⁷ = 21113150329933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 781968530743 = 21113150330061 / (2 + 1 + 1 + 1 + 3 + 1 + 5 + 0 + 3 + 3 + 0 + 0 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113150330011) 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, 390984265345 + ... + 390984265398.

It is an arithmetic number, because the mean of its divisors is an integer number (3909842653720).

Almost surely, 2^{21113150330061} is an apocalyptic number.

It is an amenable number.

21113150330061 is a deficient number, since it is larger than the sum of its proper divisors (10165590899699).

21113150330061 is an equidigital number, since it uses as much as digits as its factorization.

21113150330061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781968530752 (or 781968530746 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 21113150330061 its reverse (16003305131112), we get a palindrome (37116455461173).

The spelling of 21113150330061 in words is "twenty-one trillion, one hundred thirteen billion, one hundred fifty million, three hundred thirty thousand, sixty-one".