212040827 has 2 divisors, whose sum is σ = 212040828. Its totient is φ = 212040826.

The previous prime is 212040799. The next prime is 212040833. The reversal of 212040827 is 728040212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212040827 - 2²² = 207846523 is a prime.

It is a super-2 number, since 2×212040827² = 89922624629687858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212040796 and 212040805.

It is not a weakly prime, because it can be changed into another prime (212040727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106020413 + 106020414.

It is an arithmetic number, because the mean of its divisors is an integer number (106020414).

Almost surely, 2^212040827 is an apocalyptic number.

212040827 is a deficient number, since it is larger than the sum of its proper divisors (1).

212040827 is an equidigital number, since it uses as much as digits as its factorization.

212040827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 212040827 is about 14561.6217160040. The cubic root of 212040827 is about 596.3114701190.

The spelling of 212040827 in words is "two hundred twelve million, forty thousand, eight hundred twenty-seven".