201211212015 has 48 divisors (see below), whose sum is σ = 384747161760. Its totient is φ = 96460784640.

The previous prime is 201211212001. The next prime is 201211212071. The reversal of 201211212015 is 510212112102.

It is not a de Polignac number, because 201211212015 - 2⁵ = 201211211983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2239582 + ... + 2327691.

It is an arithmetic number, because the mean of its divisors is an integer number (8015565870).

Almost surely, 2^201211212015 is an apocalyptic number.

201211212015 is a deficient number, since it is larger than the sum of its proper divisors (183535949745).

201211212015 is a wasteful number, since it uses less digits than its factorization.

201211212015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567384 (or 4567381 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 201211212015 its reverse (510212112102), we get a palindrome (711423324117).

The spelling of 201211212015 in words is "two hundred one billion, two hundred eleven million, two hundred twelve thousand, fifteen".