21133130103021 has 16 divisors (see below), whose sum is σ = 29138122045440. Its totient is φ = 13610060262960.

The previous prime is 21133130102969. The next prime is 21133130103097. The reversal of 21133130103021 is 12030103133112.

It is a happy number.

It is not a de Polignac number, because 21133130103021 - 2¹⁰ = 21133130101997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133130103121) 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, 201757551 + ... + 201862268.

It is an arithmetic number, because the mean of its divisors is an integer number (1821132627840).

Almost surely, 2^{21133130103021} is an apocalyptic number.

It is an amenable number.

21133130103021 is a deficient number, since it is larger than the sum of its proper divisors (8004991942419).

21133130103021 is a wasteful number, since it uses less digits than its factorization.

21133130103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403620416.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21133130103021 its reverse (12030103133112), we get a palindrome (33163233236133).

The spelling of 21133130103021 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred thirty million, one hundred three thousand, twenty-one".