2172216262 has 4 divisors (see below), whose sum is σ = 3258324396. Its totient is φ = 1086108130.

The previous prime is 2172216223. The next prime is 2172216271. The reversal of 2172216262 is 2626122712.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543054064 + ... + 543054067.

It is an arithmetic number, because the mean of its divisors is an integer number (814581099).

Almost surely, 2^2172216262 is an apocalyptic number.

2172216262 is a deficient number, since it is larger than the sum of its proper divisors (1086108134).

2172216262 is a wasteful number, since it uses less digits than its factorization.

2172216262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086108133.

The product of its digits is 8064, while the sum is 31.

The square root of 2172216262 is about 46607.0409058546. The cubic root of 2172216262 is about 1295.0931914669.

Adding to 2172216262 its reverse (2626122712), we get a palindrome (4798338974).

The spelling of 2172216262 in words is "two billion, one hundred seventy-two million, two hundred sixteen thousand, two hundred sixty-two".