210211220993 has 2 divisors, whose sum is σ = 210211220994. Its totient is φ = 210211220992.

The previous prime is 210211220951. The next prime is 210211221007. The reversal of 210211220993 is 399022112012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152511337729 + 57699883264 = 390527^2 + 240208^2 .

It is a cyclic number.

It is not a de Polignac number, because 210211220993 - 2¹⁸ = 210210958849 is a prime.

It is not a weakly prime, because it can be changed into another prime (210211220393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105610496 + 105105610497.

It is an arithmetic number, because the mean of its divisors is an integer number (105105610497).

Almost surely, 2^210211220993 is an apocalyptic number.

It is an amenable number.

210211220993 is a deficient number, since it is larger than the sum of its proper divisors (1).

210211220993 is an equidigital number, since it uses as much as digits as its factorization.

210211220993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 210211220993 in words is "two hundred ten billion, two hundred eleven million, two hundred twenty thousand, nine hundred ninety-three".