211348602121 has 4 divisors (see below), whose sum is σ = 223780872852. Its totient is φ = 198916331392.

The previous prime is 211348602107. The next prime is 211348602131. The reversal of 211348602121 is 121206843112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60191715600 + 151156886521 = 245340^2 + 388789^2 .

It is a cyclic number.

It is not a de Polignac number, because 211348602121 - 2⁷ = 211348601993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211348602131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6216135340 + ... + 6216135373.

It is an arithmetic number, because the mean of its divisors is an integer number (55945218213).

Almost surely, 2^211348602121 is an apocalyptic number.

It is an amenable number.

211348602121 is a deficient number, since it is larger than the sum of its proper divisors (12432270731).

211348602121 is a wasteful number, since it uses less digits than its factorization.

211348602121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12432270730.

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 211348602121 in words is "two hundred eleven billion, three hundred forty-eight million, six hundred two thousand, one hundred twenty-one".