21032540227 has 2 divisors, whose sum is σ = 21032540228. Its totient is φ = 21032540226.

The previous prime is 21032540213. The next prime is 21032540293. The reversal of 21032540227 is 72204523012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21032540227 - 2¹⁵ = 21032507459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21032540195 and 21032540204.

It is not a weakly prime, because it can be changed into another prime (21032540297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516270113 + 10516270114.

It is an arithmetic number, because the mean of its divisors is an integer number (10516270114).

Almost surely, 2^21032540227 is an apocalyptic number.

21032540227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032540227 is an equidigital number, since it uses as much as digits as its factorization.

21032540227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The spelling of 21032540227 in words is "twenty-one billion, thirty-two million, five hundred forty thousand, two hundred twenty-seven".