21111220133033 has 8 divisors (see below), whose sum is σ = 22822940685120. Its totient is φ = 19459559951280.

The previous prime is 21111220133027. The next prime is 21111220133041. The reversal of 21111220133033 is 33033102211112.

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 21111220133033 - 2⁶ = 21111220132969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111220133233) 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, 15015091853 + ... + 15015093258.

It is an arithmetic number, because the mean of its divisors is an integer number (2852867585640).

Almost surely, 2^{21111220133033} is an apocalyptic number.

It is an amenable number.

21111220133033 is a deficient number, since it is larger than the sum of its proper divisors (1711720552087).

21111220133033 is a wasteful number, since it uses less digits than its factorization.

21111220133033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30030185167.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21111220133033 its reverse (33033102211112), we get a palindrome (54144322344145).

The spelling of 21111220133033 in words is "twenty-one trillion, one hundred eleven billion, two hundred twenty million, one hundred thirty-three thousand, thirty-three".