215214512211 has 6 divisors (see below), whose sum is σ = 310865406540. Its totient is φ = 143476341468.

The previous prime is 215214512209. The next prime is 215214512221. The reversal of 215214512211 is 112215412512.

215214512211 is a `hidden beast` number, since 2 + 1 + 521 + 4 + 5 + 122 + 11 = 666.

It is not a de Polignac number, because 215214512211 - 2¹ = 215214512209 is a prime.

It is a super-3 number, since 3×215214512211³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (215214512221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11956361781 + ... + 11956361798.

It is an arithmetic number, because the mean of its divisors is an integer number (51810901090).

Almost surely, 2^215214512211 is an apocalyptic number.

215214512211 is a deficient number, since it is larger than the sum of its proper divisors (95650894329).

215214512211 is a wasteful number, since it uses less digits than its factorization.

215214512211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23912723585 (or 23912723582 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

Adding to 215214512211 its reverse (112215412512), we get a palindrome (327429924723).

The spelling of 215214512211 in words is "two hundred fifteen billion, two hundred fourteen million, five hundred twelve thousand, two hundred eleven".