21000312033033 has 32 divisors (see below), whose sum is σ = 29517253742592. Its totient is φ = 13266080796800.

The previous prime is 21000312033011. The next prime is 21000312033037. The reversal of 21000312033033 is 33033021300012.

It is a cyclic number.

It is not a de Polignac number, because 21000312033033 - 2²⁴ = 21000295255817 is a prime.

It is a super-2 number, since 2×21000312033033² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21000312033037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13107741 + ... + 14622362.

It is an arithmetic number, because the mean of its divisors is an integer number (922414179456).

Almost surely, 2^{21000312033033} is an apocalyptic number.

It is an amenable number.

21000312033033 is a deficient number, since it is larger than the sum of its proper divisors (8516941709559).

21000312033033 is a wasteful number, since it uses less digits than its factorization.

21000312033033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27730325.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21000312033033 its reverse (33033021300012), we get a palindrome (54033333333045).

The spelling of 21000312033033 in words is "twenty-one trillion, three hundred twelve million, thirty-three thousand, thirty-three".