212641651 has 2 divisors, whose sum is σ = 212641652. Its totient is φ = 212641650.

The previous prime is 212641631. The next prime is 212641657. The reversal of 212641651 is 156146212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212641651 - 2⁵ = 212641619 is a prime.

It is not a weakly prime, because it can be changed into another prime (212641657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106320825 + 106320826.

It is an arithmetic number, because the mean of its divisors is an integer number (106320826).

Almost surely, 2^212641651 is an apocalyptic number.

212641651 is a deficient number, since it is larger than the sum of its proper divisors (1).

212641651 is an equidigital number, since it uses as much as digits as its factorization.

212641651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 212641651 is about 14582.2375169245. The cubic root of 212641651 is about 596.8741610909.

Adding to 212641651 its reverse (156146212), we get a palindrome (368787863).

The spelling of 212641651 in words is "two hundred twelve million, six hundred forty-one thousand, six hundred fifty-one".