211243352155 has 32 divisors (see below), whose sum is σ = 277963176960. Its totient is φ = 152841131520.

The previous prime is 211243352113. The next prime is 211243352269. The reversal of 211243352155 is 551253342112.

It is not a de Polignac number, because 211243352155 - 2²⁷ = 211109134427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211243352155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8445027 + ... + 8470003.

It is an arithmetic number, because the mean of its divisors is an integer number (8686349280).

Almost surely, 2^211243352155 is an apocalyptic number.

211243352155 is a deficient number, since it is larger than the sum of its proper divisors (66719824805).

211243352155 is a wasteful number, since it uses less digits than its factorization.

211243352155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25779.

The product of its digits is 36000, while the sum is 34.

Adding to 211243352155 its reverse (551253342112), we get a palindrome (762496694267).

The spelling of 211243352155 in words is "two hundred eleven billion, two hundred forty-three million, three hundred fifty-two thousand, one hundred fifty-five".