212090 has 16 divisors (see below), whose sum is σ = 387072. Its totient is φ = 83664.

The previous prime is 212081. The next prime is 212099. The reversal of 212090 is 90212.

It is an interprime number because it is at equal distance from previous prime (212081) and next prime (212099).

It is not an unprimeable number, because it can be changed into a prime (212099) 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 in 7 ways as a sum of consecutive naturals, for example, 1187 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2²¹²⁰⁹⁰ is an apocalyptic number.

212090 is a deficient number, since it is larger than the sum of its proper divisors (174982).

212090 is a wasteful number, since it uses less digits than its factorization.

212090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 212090 is about 460.5323007130. The cubic root of 212090 is about 59.6357562119.

The spelling of 212090 in words is "two hundred twelve thousand, ninety".