212451011 has 2 divisors, whose sum is σ = 212451012. Its totient is φ = 212451010.

The previous prime is 212450981. The next prime is 212451059. The reversal of 212451011 is 110154212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212451011 - 2⁶ = 212450947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212451511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106225505 + 106225506.

It is an arithmetic number, because the mean of its divisors is an integer number (106225506).

Almost surely, 2^212451011 is an apocalyptic number.

212451011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212451011 is an equidigital number, since it uses as much as digits as its factorization.

212451011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 212451011 is about 14575.6993314215. The cubic root of 212451011 is about 596.6957355389.

It can be divided in two parts, 2124 and 51011, that added together give a palindrome (53135).

The spelling of 212451011 in words is "two hundred twelve million, four hundred fifty-one thousand, eleven".