21132012421033 has 8 divisors (see below), whose sum is σ = 21147734135808. Its totient is φ = 21116296557744.

The previous prime is 21132012420979. The next prime is 21132012421049. The reversal of 21132012421033 is 33012421023112.

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 21132012421033 - 2³⁷ = 20994573467561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21132012420989 and 21132012421007.

It is not an unprimeable number, because it can be changed into a prime (21132012421063) 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, 5775910 + ... + 8696272.

It is an arithmetic number, because the mean of its divisors is an integer number (2643466766976).

Almost surely, 2^{21132012421033} is an apocalyptic number.

It is an amenable number.

21132012421033 is a deficient number, since it is larger than the sum of its proper divisors (15721714775).

21132012421033 is a wasteful number, since it uses less digits than its factorization.

21132012421033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925743.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21132012421033 its reverse (33012421023112), we get a palindrome (54144433444145).

The spelling of 21132012421033 in words is "twenty-one trillion, one hundred thirty-two billion, twelve million, four hundred twenty-one thousand, thirty-three".