21033111133133 has 8 divisors (see below), whose sum is σ = 23005121319936. Its totient is φ = 19071085808800.

The previous prime is 21033111133129. The next prime is 21033111133189. The reversal of 21033111133133 is 33133111133012.

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 21033111133133 - 2² = 21033111133129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033111133933) 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, 2496211208 + ... + 2496219633.

It is an arithmetic number, because the mean of its divisors is an integer number (2875640164992).

Almost surely, 2^{21033111133133} is an apocalyptic number.

It is an amenable number.

21033111133133 is a deficient number, since it is larger than the sum of its proper divisors (1972010186803).

21033111133133 is a wasteful number, since it uses less digits than its factorization.

21033111133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992431235.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 21033111133133 its reverse (33133111133012), we get a palindrome (54166222266145).

The spelling of 21033111133133 in words is "twenty-one trillion, thirty-three billion, one hundred eleven million, one hundred thirty-three thousand, one hundred thirty-three".