212222851 has 2 divisors, whose sum is σ = 212222852. Its totient is φ = 212222850.

The previous prime is 212222839. The next prime is 212222893. The reversal of 212222851 is 158222212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212222851 - 2¹⁹ = 211698563 is a prime.

It is not a weakly prime, because it can be changed into another prime (212222051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111425 + 106111426.

It is an arithmetic number, because the mean of its divisors is an integer number (106111426).

Almost surely, 2^212222851 is an apocalyptic number.

212222851 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222851 is an equidigital number, since it uses as much as digits as its factorization.

212222851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 25.

The square root of 212222851 is about 14567.8705032685. The cubic root of 212222851 is about 596.4820535490.

The spelling of 212222851 in words is "two hundred twelve million, two hundred twenty-two thousand, eight hundred fifty-one".