21012230330331 has 32 divisors (see below), whose sum is σ = 30815843337216. Its totient is φ = 12681416832000.

The previous prime is 21012230330293. The next prime is 21012230330339. The reversal of 21012230330331 is 13303303221012.

It is not a de Polignac number, because 21012230330331 - 2¹⁵ = 21012230297563 is a prime.

It is a super-2 number, since 2×21012230330331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21012230330339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70618375 + ... + 70915296.

It is an arithmetic number, because the mean of its divisors is an integer number (962995104288).

Almost surely, 2^{21012230330331} is an apocalyptic number.

21012230330331 is a deficient number, since it is larger than the sum of its proper divisors (9803613006885).

21012230330331 is a wasteful number, since it uses less digits than its factorization.

21012230330331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141533803.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21012230330331 its reverse (13303303221012), we get a palindrome (34315533551343).

The spelling of 21012230330331 in words is "twenty-one trillion, twelve billion, two hundred thirty million, three hundred thirty thousand, three hundred thirty-one".