213121213322986 has 16 divisors (see below), whose sum is σ = 319887973232640. Its totient is φ = 106491890044960.

The previous prime is 213121213322957. The next prime is 213121213322987. The reversal of 213121213322986 is 689223312121312.

It is not an unprimeable number, because it can be changed into a prime (213121213322987) 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, 543926295 + ... + 544317973.

It is an arithmetic number, because the mean of its divisors is an integer number (19992998327040).

Almost surely, 2^{213121213322986} is an apocalyptic number.

213121213322986 is a deficient number, since it is larger than the sum of its proper divisors (106766759909654).

213121213322986 is a wasteful number, since it uses less digits than its factorization.

213121213322986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566429.

The product of its digits is 373248, while the sum is 46.

The spelling of 213121213322986 in words is "two hundred thirteen trillion, one hundred twenty-one billion, two hundred thirteen million, three hundred twenty-two thousand, nine hundred eighty-six".