213158726122 has 8 divisors (see below), whose sum is σ = 321064803972. Its totient is φ = 106137124800.

The previous prime is 213158726083. The next prime is 213158726173. The reversal of 213158726122 is 221627851312.

It can be written as a sum of positive squares in 2 ways, for example, as 208676289721 + 4482436401 = 456811^2 + 66951^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221118529 + ... + 221119492.

Almost surely, 2^213158726122 is an apocalyptic number.

213158726122 is a deficient number, since it is larger than the sum of its proper divisors (107906077850).

213158726122 is a wasteful number, since it uses less digits than its factorization.

213158726122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442238264.

The product of its digits is 80640, while the sum is 40.

The spelling of 213158726122 in words is "two hundred thirteen billion, one hundred fifty-eight million, seven hundred twenty-six thousand, one hundred twenty-two".