212480991 has 6 divisors (see below), whose sum is σ = 306917000. Its totient is φ = 141653988.

The previous prime is 212480987. The next prime is 212481013. The reversal of 212480991 is 199084212.

It is not a de Polignac number, because 212480991 - 2² = 212480987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212480981) 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 in 5 ways as a sum of consecutive naturals, for example, 11804491 + ... + 11804508.

Almost surely, 2^212480991 is an apocalyptic number.

212480991 is a deficient number, since it is larger than the sum of its proper divisors (94436009).

212480991 is a wasteful number, since it uses less digits than its factorization.

212480991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23609005 (or 23609002 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 212480991 is about 14576.7277192105. The cubic root of 212480991 is about 596.7238017688.

The spelling of 212480991 in words is "two hundred twelve million, four hundred eighty thousand, nine hundred ninety-one".