21021111333332 has 12 divisors (see below), whose sum is σ = 40131212545536. Its totient is φ = 9555050606040.

The previous prime is 21021111333269. The next prime is 21021111333347. The reversal of 21021111333332 is 23333311112012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238876265108 + ... + 238876265195.

It is an arithmetic number, because the mean of its divisors is an integer number (3344267712128).

Almost surely, 2^{21021111333332} is an apocalyptic number.

21021111333332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21021111333332 is a deficient number, since it is larger than the sum of its proper divisors (19110101212204).

21021111333332 is a wasteful number, since it uses less digits than its factorization.

21021111333332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477752530318 (or 477752530316 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21021111333332 its reverse (23333311112012), we get a palindrome (44354422445344).

The spelling of 21021111333332 in words is "twenty-one trillion, twenty-one billion, one hundred eleven million, three hundred thirty-three thousand, three hundred thirty-two".