21020011103332 has 6 divisors (see below), whose sum is σ = 36785019430838. Its totient is φ = 10510005551664.

The previous prime is 21020011103261. The next prime is 21020011103353. The reversal of 21020011103332 is 23330111002012.

It can be written as a sum of positive squares in only one way, i.e., 13897432261476 + 7122578841856 = 3727926^2 + 2668816^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627501387913 + ... + 2627501387920.

Almost surely, 2^{21020011103332} is an apocalyptic number.

It is an amenable number.

21020011103332 is a deficient number, since it is larger than the sum of its proper divisors (15765008327506).

21020011103332 is a wasteful number, since it uses less digits than its factorization.

21020011103332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255002775837 (or 5255002775835 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21020011103332 its reverse (23330111002012), we get a palindrome (44350122105344).

The spelling of 21020011103332 in words is "twenty-one trillion, twenty billion, eleven million, one hundred three thousand, three hundred thirty-two".