21133011213311 has 16 divisors (see below), whose sum is σ = 22253600553600. Its totient is φ = 20013255919008.

The previous prime is 21133011213299. The next prime is 21133011213317. The reversal of 21133011213311 is 11331211033112.

It is a cyclic number.

It is not a de Polignac number, because 21133011213311 - 2⁴² = 16734964702207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133011213317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 761838080 + ... + 761865818.

It is an arithmetic number, because the mean of its divisors is an integer number (1390850034600).

Almost surely, 2^{21133011213311} is an apocalyptic number.

21133011213311 is a deficient number, since it is larger than the sum of its proper divisors (1120589340289).

21133011213311 is a wasteful number, since it uses less digits than its factorization.

21133011213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41318.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 21133011213311 its reverse (11331211033112), we get a palindrome (32464222246423).

The spelling of 21133011213311 in words is "twenty-one trillion, one hundred thirty-three billion, eleven million, two hundred thirteen thousand, three hundred eleven".