212021293 has 8 divisors (see below), whose sum is σ = 233118720. Its totient is φ = 191227680.

The previous prime is 212021239. The next prime is 212021311. The reversal of 212021293 is 392120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212021293 - 2¹³ = 212013101 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 (212021203) 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, 74488 + ... + 77281.

It is an arithmetic number, because the mean of its divisors is an integer number (29139840).

Almost surely, 2^212021293 is an apocalyptic number.

It is an amenable number.

212021293 is a deficient number, since it is larger than the sum of its proper divisors (21097427).

212021293 is a wasteful number, since it uses less digits than its factorization.

212021293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151907.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 212021293 is about 14560.9509648237. The cubic root of 212021293 is about 596.2931580701.

The spelling of 212021293 in words is "two hundred twelve million, twenty-one thousand, two hundred ninety-three".