162101621 has 8 divisors (see below), whose sum is σ = 176966688. Its totient is φ = 147258000.

The previous prime is 162101603. The next prime is 162101629. The reversal of 162101621 is 126101261.

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

It is a cyclic number.

It is not a de Polignac number, because 162101621 - 2¹⁴ = 162085237 is a prime.

It is a super-3 number, since 3×162101621³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162101593 and 162101602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162101629) 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, 13286 + ... + 22376.

It is an arithmetic number, because the mean of its divisors is an integer number (22120836).

Almost surely, 2^162101621 is an apocalyptic number.

162101621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162101621 is a deficient number, since it is larger than the sum of its proper divisors (14865067).

162101621 is a wasteful number, since it uses less digits than its factorization.

162101621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10723.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 162101621 is about 12731.9134854114. The cubic root of 162101621 is about 545.2501402039.

Adding to 162101621 its reverse (126101261), we get a palindrome (288202882).

The spelling of 162101621 in words is "one hundred sixty-two million, one hundred one thousand, six hundred twenty-one".