21112020332153 has 2 divisors, whose sum is σ = 21112020332154. Its totient is φ = 21112020332152.

The previous prime is 21112020332129. The next prime is 21112020332191. The reversal of 21112020332153 is 35123302021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21023765588224 + 88254743929 = 4585168^2 + 297077^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112020332153 - 2²⁶ = 21111953223289 is a prime.

It is not a weakly prime, because it can be changed into another prime (21112020382153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556010166076 + 10556010166077.

It is an arithmetic number, because the mean of its divisors is an integer number (10556010166077).

Almost surely, 2^{21112020332153} is an apocalyptic number.

It is an amenable number.

21112020332153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112020332153 is an equidigital number, since it uses as much as digits as its factorization.

21112020332153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 21112020332153 its reverse (35123302021112), we get a palindrome (56235322353265).

The spelling of 21112020332153 in words is "twenty-one trillion, one hundred twelve billion, twenty million, three hundred thirty-two thousand, one hundred fifty-three".