161001211622 has 32 divisors (see below), whose sum is σ = 254659507200. Its totient is φ = 76235529888.

The previous prime is 161001211621. The next prime is 161001211627. The reversal of 161001211622 is 226112100161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161001211621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548843 + ... + 789449.

It is an arithmetic number, because the mean of its divisors is an integer number (7958109600).

Almost surely, 2^161001211622 is an apocalyptic number.

161001211622 is a deficient number, since it is larger than the sum of its proper divisors (93658295578).

161001211622 is a wasteful number, since it uses less digits than its factorization.

161001211622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240860.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 161001211622 its reverse (226112100161), we get a palindrome (387113311783).

The spelling of 161001211622 in words is "one hundred sixty-one billion, one million, two hundred eleven thousand, six hundred twenty-two".