21120202200947 has 2 divisors, whose sum is σ = 21120202200948. Its totient is φ = 21120202200946.

The previous prime is 21120202200919. The next prime is 21120202201027. The reversal of 21120202200947 is 74900220202112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21120202200947 - 2¹⁶ = 21120202135411 is a prime.

It is not a weakly prime, because it can be changed into another prime (21120202200047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560101100473 + 10560101100474.

It is an arithmetic number, because the mean of its divisors is an integer number (10560101100474).

Almost surely, 2^{21120202200947} is an apocalyptic number.

21120202200947 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120202200947 is an equidigital number, since it uses as much as digits as its factorization.

21120202200947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 21120202200947 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, two hundred thousand, nine hundred forty-seven".