161372222 has 8 divisors (see below), whose sum is σ = 264063672. Its totient is φ = 73351000.

The previous prime is 161372213. The next prime is 161372231. The reversal of 161372222 is 222273161.

It is an interprime number because it is at equal distance from previous prime (161372213) and next prime (161372231).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161372191 and 161372200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667529 + ... + 3667572.

It is an arithmetic number, because the mean of its divisors is an integer number (33007959).

Almost surely, 2^161372222 is an apocalyptic number.

161372222 is a deficient number, since it is larger than the sum of its proper divisors (102691450).

161372222 is a wasteful number, since it uses less digits than its factorization.

161372222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335114.

The product of its digits is 2016, while the sum is 26.

The square root of 161372222 is about 12703.2366741709. The cubic root of 161372222 is about 544.4311006617.

The spelling of 161372222 in words is "one hundred sixty-one million, three hundred seventy-two thousand, two hundred twenty-two".