213001012212123 has 16 divisors (see below), whose sum is σ = 284898522443040. Its totient is φ = 141552092388096.

The previous prime is 213001012212049. The next prime is 213001012212127. The reversal of 213001012212123 is 321212210100312.

It is not a de Polignac number, because 213001012212123 - 2¹² = 213001012208027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213001012212123.

It is not an unprimeable number, because it can be changed into a prime (213001012212127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323731263 + ... + 324388551.

It is an arithmetic number, because the mean of its divisors is an integer number (17806157652690).

Almost surely, 2^{213001012212123} is an apocalyptic number.

213001012212123 is a deficient number, since it is larger than the sum of its proper divisors (71897510230917).

213001012212123 is a wasteful number, since it uses less digits than its factorization.

213001012212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998366.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 213001012212123 its reverse (321212210100312), we get a palindrome (534213222312435).

The spelling of 213001012212123 in words is "two hundred thirteen trillion, one billion, twelve million, two hundred twelve thousand, one hundred twenty-three".