161622112 has 12 divisors (see below), whose sum is σ = 318193596. Its totient is φ = 80811040.

The previous prime is 161622101. The next prime is 161622137. The reversal of 161622112 is 211226161.

It is a super-2 number, since 2×161622112² = 52243414174681088, which contains 22 as substring.

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, 2525314 + ... + 2525377.

It is an arithmetic number, because the mean of its divisors is an integer number (26516133).

Almost surely, 2^161622112 is an apocalyptic number.

It is an amenable number.

161622112 is a deficient number, since it is larger than the sum of its proper divisors (156571484).

161622112 is an equidigital number, since it uses as much as digits as its factorization.

161622112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050701 (or 5050693 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 161622112 is about 12713.0685516912. The cubic root of 161622112 is about 544.7119786666.

Adding to 161622112 its reverse (211226161), we get a palindrome (372848273).

The spelling of 161622112 in words is "one hundred sixty-one million, six hundred twenty-two thousand, one hundred twelve".