21133313123122 has 16 divisors (see below), whose sum is σ = 33585691198680. Its totient is φ = 9938861146368.

The previous prime is 21133313123119. The next prime is 21133313123203. The reversal of 21133313123122 is 22132131333112.

It can be written as a sum of positive squares in 4 ways, for example, as 20185242854401 + 948070268721 = 4492799^2 + 973689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194550597 + ... + 194659192.

Almost surely, 2^{21133313123122} is an apocalyptic number.

21133313123122 is a deficient number, since it is larger than the sum of its proper divisors (12452378075558).

21133313123122 is a wasteful number, since it uses less digits than its factorization.

21133313123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389211405.

The product of its digits is 3888, while the sum is 28.

Adding to 21133313123122 its reverse (22132131333112), we get a palindrome (43265444456234).

The spelling of 21133313123122 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred twenty-two".