21201211332033 has 16 divisors (see below), whose sum is σ = 28332514465920. Its totient is φ = 14102040484224.

The previous prime is 21201211331957. The next prime is 21201211332073. The reversal of 21201211332033 is 33023311210212.

It is not a de Polignac number, because 21201211332033 - 2¹⁴ = 21201211315649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21201211331994 and 21201211332012.

It is not an unprimeable number, because it can be changed into a prime (21201211332073) 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, 3334635 + ... + 7315887.

It is an arithmetic number, because the mean of its divisors is an integer number (1770782154120).

Almost surely, 2^{21201211332033} is an apocalyptic number.

It is an amenable number.

21201211332033 is a deficient number, since it is larger than the sum of its proper divisors (7131303133887).

21201211332033 is a wasteful number, since it uses less digits than its factorization.

21201211332033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985288.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21201211332033 its reverse (33023311210212), we get a palindrome (54224522542245).

The spelling of 21201211332033 in words is "twenty-one trillion, two hundred one billion, two hundred eleven million, three hundred thirty-two thousand, thirty-three".