21213001212033 has 16 divisors (see below), whose sum is σ = 28408458528000. Its totient is φ = 14079797827200.

The previous prime is 21213001212031. The next prime is 21213001212041. The reversal of 21213001212033 is 33021210031212.

It is not a de Polignac number, because 21213001212033 - 2¹ = 21213001212031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21213001212031) 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, 151383 + ... + 6515283.

It is an arithmetic number, because the mean of its divisors is an integer number (1775528658000).

Almost surely, 2^{21213001212033} is an apocalyptic number.

It is an amenable number.

21213001212033 is a deficient number, since it is larger than the sum of its proper divisors (7195457315967).

21213001212033 is a wasteful number, since it uses less digits than its factorization.

21213001212033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368792.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21213001212033 its reverse (33021210031212), we get a palindrome (54234211243245).

It can be divided in two parts, 2121300 and 1212033, that added together give a palindrome (3333333).

The spelling of 21213001212033 in words is "twenty-one trillion, two hundred thirteen billion, one million, two hundred twelve thousand, thirty-three".