21121330132233 has 16 divisors (see below), whose sum is σ = 33131498247360. Its totient is φ = 13252599298368.

The previous prime is 21121330132183. The next prime is 21121330132249. The reversal of 21121330132233 is 33223103312112.

21121330132233 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 1 + 3 + 301 + 322 + 33 = 666.

It is not a de Polignac number, because 21121330132233 - 2⁶ = 21121330132169 is a prime.

It is a super-2 number, since 2×21121330132233² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21121330132197 and 21121330132206.

It is not an unprimeable number, because it can be changed into a prime (21121330132333) 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, 23007984435 + ... + 23007985352.

It is an arithmetic number, because the mean of its divisors is an integer number (2070718640460).

Almost surely, 2^{21121330132233} is an apocalyptic number.

It is an amenable number.

21121330132233 is a deficient number, since it is larger than the sum of its proper divisors (12010168115127).

21121330132233 is a wasteful number, since it uses less digits than its factorization.

21121330132233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46015969813 (or 46015969807 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21121330132233 its reverse (33223103312112), we get a palindrome (54344433444345).

The spelling of 21121330132233 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred thirty million, one hundred thirty-two thousand, two hundred thirty-three".