212797699 has 2 divisors, whose sum is σ = 212797700. Its totient is φ = 212797698.

The previous prime is 212797657. The next prime is 212797723. The reversal of 212797699 is 996797212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212797699 - 2¹¹ = 212795651 is a prime.

It is not a weakly prime, because it can be changed into another prime (212797649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106398849 + 106398850.

It is an arithmetic number, because the mean of its divisors is an integer number (106398850).

Almost surely, 2^212797699 is an apocalyptic number.

212797699 is a deficient number, since it is larger than the sum of its proper divisors (1).

212797699 is an equidigital number, since it uses as much as digits as its factorization.

212797699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 212797699 is about 14587.5871548382. The cubic root of 212797699 is about 597.0201316223.

It can be divided in two parts, 21279769 and 9, that multiplied together give a square (191517921 = 13839²).

The spelling of 212797699 in words is "two hundred twelve million, seven hundred ninety-seven thousand, six hundred ninety-nine".