211470299869 has 2 divisors, whose sum is σ = 211470299870. Its totient is φ = 211470299868.

The previous prime is 211470299861. The next prime is 211470299897. The reversal of 211470299869 is 968992074112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107954959225 + 103515340644 = 328565^2 + 321738^2 .

It is a cyclic number.

It is not a de Polignac number, because 211470299869 - 2³ = 211470299861 is a prime.

It is a super-2 number, since 2×211470299869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211470299861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105735149934 + 105735149935.

It is an arithmetic number, because the mean of its divisors is an integer number (105735149935).

Almost surely, 2^211470299869 is an apocalyptic number.

It is an amenable number.

211470299869 is a deficient number, since it is larger than the sum of its proper divisors (1).

211470299869 is an equidigital number, since it uses as much as digits as its factorization.

211470299869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 211470299869 in words is "two hundred eleven billion, four hundred seventy million, two hundred ninety-nine thousand, eight hundred sixty-nine".