161922211330 has 32 divisors (see below), whose sum is σ = 318019944960. Its totient is φ = 58869025920.

The previous prime is 161922211327. The next prime is 161922211357. The reversal of 161922211330 is 33112229161.

It is a junction number, because it is equal to n+sod(n) for n = 161922211292 and 161922211301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414886 + ... + 704254.

It is an arithmetic number, because the mean of its divisors is an integer number (9938123280).

Almost surely, 2^161922211330 is an apocalyptic number.

161922211330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161922211330 is a deficient number, since it is larger than the sum of its proper divisors (156097733630).

161922211330 is a wasteful number, since it uses less digits than its factorization.

161922211330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294474.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 161922211330 in words is "one hundred sixty-one billion, nine hundred twenty-two million, two hundred eleven thousand, three hundred thirty".