2215220061 has 8 divisors (see below), whose sum is σ = 2953979424. Its totient is φ = 1476637040.

The previous prime is 2215220053. The next prime is 2215220141. The reversal of 2215220061 is 1600225122.

It is a happy number.

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 2215220061 - 2³ = 2215220053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215220261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11286 + ... + 67511.

It is an arithmetic number, because the mean of its divisors is an integer number (369247428).

Almost surely, 2^2215220061 is an apocalyptic number.

It is an amenable number.

2215220061 is a deficient number, since it is larger than the sum of its proper divisors (738759363).

2215220061 is an equidigital number, since it uses as much as digits as its factorization.

2215220061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88171.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2215220061 is about 47066.1243464979. The cubic root of 2215220061 is about 1303.5838115425.

Adding to 2215220061 its reverse (1600225122), we get a palindrome (3815445183).

The spelling of 2215220061 in words is "two billion, two hundred fifteen million, two hundred twenty thousand, sixty-one".