215012061 has 24 divisors (see below), whose sum is σ = 350494560. Its totient is φ = 125815200.

The previous prime is 215012041. The next prime is 215012093. The reversal of 215012061 is 160210512.

It is not a de Polignac number, because 215012061 - 2⁵ = 215012029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215012041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34575 + ... + 40316.

It is an arithmetic number, because the mean of its divisors is an integer number (14603940).

Almost surely, 2^215012061 is an apocalyptic number.

It is an amenable number.

215012061 is a deficient number, since it is larger than the sum of its proper divisors (135482499).

215012061 is a wasteful number, since it uses less digits than its factorization.

215012061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74937 (or 74934 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 215012061 is about 14663.2895695338. The cubic root of 215012061 is about 599.0838434740.

Adding to 215012061 its reverse (160210512), we get a palindrome (375222573).

The spelling of 215012061 in words is "two hundred fifteen million, twelve thousand, sixty-one".