211251215145 has 8 divisors (see below), whose sum is σ = 338001944256. Its totient is φ = 112667314736.

The previous prime is 211251215059. The next prime is 211251215167. The reversal of 211251215145 is 541512152112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211251215145 - 2¹⁰ = 211251214121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7041707157 + ... + 7041707186.

It is an arithmetic number, because the mean of its divisors is an integer number (42250243032).

Almost surely, 2^211251215145 is an apocalyptic number.

It is an amenable number.

211251215145 is a deficient number, since it is larger than the sum of its proper divisors (126750729111).

211251215145 is a wasteful number, since it uses less digits than its factorization.

211251215145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14083414351.

The product of its digits is 4000, while the sum is 30.

Adding to 211251215145 its reverse (541512152112), we get a palindrome (752763367257).

The spelling of 211251215145 in words is "two hundred eleven billion, two hundred fifty-one million, two hundred fifteen thousand, one hundred forty-five".