21101033013331 has 8 divisors (see below), whose sum is σ = 21792457350144. Its totient is φ = 20410280292360.

The previous prime is 21101033013311. The next prime is 21101033013397. The reversal of 21101033013331 is 13331033010112.

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

It is a cyclic number.

It is not a de Polignac number, because 21101033013331 - 2⁵ = 21101033013299 is a prime.

It is a super-2 number, since 2×21101033013331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101033013311) 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, 167840095 + ... + 167965768.

It is an arithmetic number, because the mean of its divisors is an integer number (2724057168768).

Almost surely, 2^{21101033013331} is an apocalyptic number.

21101033013331 is a deficient number, since it is larger than the sum of its proper divisors (691424336813).

21101033013331 is a wasteful number, since it uses less digits than its factorization.

21101033013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335807921.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21101033013331 its reverse (13331033010112), we get a palindrome (34432066023443).

The spelling of 21101033013331 in words is "twenty-one trillion, one hundred one billion, thirty-three million, thirteen thousand, three hundred thirty-one".