2215021955 has 8 divisors (see below), whose sum is σ = 2703078000. Its totient is φ = 1741983136.

The previous prime is 2215021937. The next prime is 2215021973. The reversal of 2215021955 is 5591205122.

It is an interprime number because it is at equal distance from previous prime (2215021937) and next prime (2215021973).

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 2215021955 - 2¹⁴ = 2215005571 is a prime.

It is a super-2 number, since 2×2215021955² = 9812644522264044050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3753980 + ... + 3754569.

It is an arithmetic number, because the mean of its divisors is an integer number (337884750).

Almost surely, 2^2215021955 is an apocalyptic number.

2215021955 is a deficient number, since it is larger than the sum of its proper divisors (488056045).

2215021955 is an equidigital number, since it uses as much as digits as its factorization.

2215021955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508613.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 2215021955 is about 47064.0197496984. The cubic root of 2215021955 is about 1303.5449507723.

The spelling of 2215021955 in words is "two billion, two hundred fifteen million, twenty-one thousand, nine hundred fifty-five".