211213078904293 has 2 divisors, whose sum is σ = 211213078904294. Its totient is φ = 211213078904292.

The previous prime is 211213078904291. The next prime is 211213078904393. The reversal of 211213078904293 is 392409870312112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150960367547649 + 60252711356644 = 12286593^2 + 7762262^2 .

It is a cyclic number.

It is not a de Polignac number, because 211213078904293 - 2¹ = 211213078904291 is a prime.

It is a super-2 number, since 2×211213078904293² (a number of 29 digits) contains 22 as substring.

Together with 211213078904291, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211213078904293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211213078904291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606539452146 + 105606539452147.

It is an arithmetic number, because the mean of its divisors is an integer number (105606539452147).

Almost surely, 2^{211213078904293} is an apocalyptic number.

It is an amenable number.

211213078904293 is a deficient number, since it is larger than the sum of its proper divisors (1).

211213078904293 is an equidigital number, since it uses as much as digits as its factorization.

211213078904293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 211213078904293 in words is "two hundred eleven trillion, two hundred thirteen billion, seventy-eight million, nine hundred four thousand, two hundred ninety-three".