21334111402021 has 16 divisors (see below), whose sum is σ = 23385651322176. Its totient is φ = 19301264640000.

The previous prime is 21334111402007. The next prime is 21334111402033. The reversal of 21334111402021 is 12020411143312.

It is a cyclic number.

It is not a de Polignac number, because 21334111402021 - 2¹⁵ = 21334111369253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334111408021) 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, 30854631 + ... + 31538491.

It is an arithmetic number, because the mean of its divisors is an integer number (1461603207636).

Almost surely, 2^{21334111402021} is an apocalyptic number.

It is an amenable number.

21334111402021 is a deficient number, since it is larger than the sum of its proper divisors (2051539920155).

21334111402021 is a wasteful number, since it uses less digits than its factorization.

21334111402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697524.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21334111402021 its reverse (12020411143312), we get a palindrome (33354522545333).

The spelling of 21334111402021 in words is "twenty-one trillion, three hundred thirty-four billion, one hundred eleven million, four hundred two thousand, twenty-one".