212223022397 has 2 divisors, whose sum is σ = 212223022398. Its totient is φ = 212223022396.

The previous prime is 212223022391. The next prime is 212223022409. The reversal of 212223022397 is 793220322212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134772688996 + 77450333401 = 367114^2 + 278299^2 .

It is a cyclic number.

It is not a de Polignac number, because 212223022397 - 2¹⁴ = 212223006013 is a prime.

It is a super-2 number, since 2×212223022397² (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 (212223022391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111511198 + 106111511199.

It is an arithmetic number, because the mean of its divisors is an integer number (106111511199).

Almost surely, 2^212223022397 is an apocalyptic number.

It is an amenable number.

212223022397 is a deficient number, since it is larger than the sum of its proper divisors (1).

212223022397 is an equidigital number, since it uses as much as digits as its factorization.

212223022397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 212223022397 in words is "two hundred twelve billion, two hundred twenty-three million, twenty-two thousand, three hundred ninety-seven".