162121120 has 48 divisors (see below), whose sum is σ = 437730048. Its totient is φ = 55584000.

The previous prime is 162121111. The next prime is 162121123. The reversal of 162121120 is 21121261.

162121120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 162121094 and 162121103.

It is not an unprimeable number, because it can be changed into a prime (162121123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71256 + ... + 73495.

It is an arithmetic number, because the mean of its divisors is an integer number (9119376).

Almost surely, 2^162121120 is an apocalyptic number.

162121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162121120 is an abundant number, since it is smaller than the sum of its proper divisors (275608928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162121120 is a wasteful number, since it uses less digits than its factorization.

162121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144773 (or 144765 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 162121120 is about 12732.6792153105. The cubic root of 162121120 is about 545.2720018118.

Adding to 162121120 its reverse (21121261), we get a palindrome (183242381).

The spelling of 162121120 in words is "one hundred sixty-two million, one hundred twenty-one thousand, one hundred twenty".