212021221283 has 2 divisors, whose sum is σ = 212021221284. Its totient is φ = 212021221282.

The previous prime is 212021221207. The next prime is 212021221289. The reversal of 212021221283 is 382122120212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021221283 - 2²² = 212017026979 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021221289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010610641 + 106010610642.

It is an arithmetic number, because the mean of its divisors is an integer number (106010610642).

Almost surely, 2^212021221283 is an apocalyptic number.

212021221283 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021221283 is an equidigital number, since it uses as much as digits as its factorization.

212021221283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 212021221283 its reverse (382122120212), we get a palindrome (594143341495).

The spelling of 212021221283 in words is "two hundred twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred eighty-three".