212602423861 has 8 divisors (see below), whose sum is σ = 225112748184. Its totient is φ = 200092577280.

The previous prime is 212602423849. The next prime is 212602423871. The reversal of 212602423861 is 168324206212.

It can be written as a sum of positive squares in 4 ways, for example, as 71459447761 + 141142976100 = 267319^2 + 375690^2 .

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 212602423861 - 2¹¹ = 212602421813 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 212602423861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212602423871) 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, 1237051 + ... + 1398391.

It is an arithmetic number, because the mean of its divisors is an integer number (28139093523).

Almost surely, 2^212602423861 is an apocalyptic number.

It is an amenable number.

212602423861 is a deficient number, since it is larger than the sum of its proper divisors (12510324323).

212602423861 is a wasteful number, since it uses less digits than its factorization.

212602423861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238871.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 212602423861 in words is "two hundred twelve billion, six hundred two million, four hundred twenty-three thousand, eight hundred sixty-one".