211240344129 has 16 divisors (see below), whose sum is σ = 287705268480. Its totient is φ = 137802384000.

The previous prime is 211240344109. The next prime is 211240344151. The reversal of 211240344129 is 921443042112.

It is not a de Polignac number, because 211240344129 - 2⁵ = 211240344097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211240344129.

It is not an unprimeable number, because it can be changed into a prime (211240344109) 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, 549879 + ... + 851379.

It is an arithmetic number, because the mean of its divisors is an integer number (17981579280).

Almost surely, 2^211240344129 is an apocalyptic number.

It is an amenable number.

211240344129 is a deficient number, since it is larger than the sum of its proper divisors (76464924351).

211240344129 is a wasteful number, since it uses less digits than its factorization.

211240344129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306520.

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 211240344129 in words is "two hundred eleven billion, two hundred forty million, three hundred forty-four thousand, one hundred twenty-nine".