212002961 has 4 divisors (see below), whose sum is σ = 212079924. Its totient is φ = 211926000.

The previous prime is 212002951. The next prime is 212002991. The reversal of 212002961 is 169200212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107329600 + 104673361 = 10360^2 + 10231^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002961 - 2⁶ = 212002897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34190 + ... + 39911.

It is an arithmetic number, because the mean of its divisors is an integer number (53019981).

Almost surely, 2^212002961 is an apocalyptic number.

It is an amenable number.

212002961 is a deficient number, since it is larger than the sum of its proper divisors (76963).

212002961 is an equidigital number, since it uses as much as digits as its factorization.

212002961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76962.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 212002961 is about 14560.3214593635. The cubic root of 212002961 is about 596.2759718069.

The spelling of 212002961 in words is "two hundred twelve million, two thousand, nine hundred sixty-one".