211457012 has 24 divisors (see below), whose sum is σ = 399424872. Its totient is φ = 97372800.

The previous prime is 211457011. The next prime is 211457017. The reversal of 211457012 is 210754112.

It can be written as a sum of positive squares in 4 ways, for example, as 6280036 + 205176976 = 2506^2 + 14324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211457011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19562 + ... + 28382.

It is an arithmetic number, because the mean of its divisors is an integer number (16642703).

Almost surely, 2^211457012 is an apocalyptic number.

It is an amenable number.

211457012 is a deficient number, since it is larger than the sum of its proper divisors (187967860).

211457012 is a wasteful number, since it uses less digits than its factorization.

211457012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299 (or 9297 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 211457012 is about 14541.5615392571. The cubic root of 211457012 is about 595.7636894796.

The spelling of 211457012 in words is "two hundred eleven million, four hundred fifty-seven thousand, twelve".