21140033433311 has 4 divisors (see below), whose sum is σ = 22766189851272. Its totient is φ = 19513877015352.

The previous prime is 21140033433301. The next prime is 21140033433317. The reversal of 21140033433311 is 11333433004112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21140033433311 - 2³⁸ = 20865155526367 is a prime.

It is a super-3 number, since 3×21140033433311³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140033433317) 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, 813078208961 + ... + 813078208986.

It is an arithmetic number, because the mean of its divisors is an integer number (5691547462818).

Almost surely, 2^{21140033433311} is an apocalyptic number.

21140033433311 is a deficient number, since it is larger than the sum of its proper divisors (1626156417961).

21140033433311 is a wasteful number, since it uses less digits than its factorization.

21140033433311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626156417960.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 21140033433311 its reverse (11333433004112), we get a palindrome (32473466437423).

The spelling of 21140033433311 in words is "twenty-one trillion, one hundred forty billion, thirty-three million, four hundred thirty-three thousand, three hundred eleven".