212913901 has 8 divisors (see below), whose sum is σ = 217649664. Its totient is φ = 208186800.

The previous prime is 212913893. The next prime is 212913923. The reversal of 212913901 is 109319212.

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 212913901 - 2³ = 212913893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212913901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212913931) 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, 88156 + ... + 90538.

It is an arithmetic number, because the mean of its divisors is an integer number (27206208).

Almost surely, 2^212913901 is an apocalyptic number.

It is an amenable number.

212913901 is a deficient number, since it is larger than the sum of its proper divisors (4735763).

212913901 is a wasteful number, since it uses less digits than its factorization.

212913901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 212913901 is about 14591.5695180471. The cubic root of 212913901 is about 597.1287830311.

The spelling of 212913901 in words is "two hundred twelve million, nine hundred thirteen thousand, nine hundred one".