212012057 has 2 divisors, whose sum is σ = 212012058. Its totient is φ = 212012056.

The previous prime is 212012033. The next prime is 212012071. The reversal of 212012057 is 750210212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194212096 + 17799961 = 13936^2 + 4219^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012057 - 2⁶ = 212011993 is a prime.

It is a super-2 number, since 2×212012057² = 89898224626742498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212012077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006028 + 106006029.

It is an arithmetic number, because the mean of its divisors is an integer number (106006029).

Almost surely, 2^212012057 is an apocalyptic number.

It is an amenable number.

212012057 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012057 is an equidigital number, since it uses as much as digits as its factorization.

212012057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 212012057 is about 14560.6338117542. The cubic root of 212012057 is about 596.2844994373.

Adding to 212012057 its reverse (750210212), we get a palindrome (962222269).

The spelling of 212012057 in words is "two hundred twelve million, twelve thousand, fifty-seven".