101621166 has 32 divisors (see below), whose sum is σ = 209353248. Its totient is φ = 32860800.

The previous prime is 101621161. The next prime is 101621167. The reversal of 101621166 is 661126101.

It is a super-2 number, since 2×101621166² = 20653722758399112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101621161) 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, 144616 + ... + 145316.

It is an arithmetic number, because the mean of its divisors is an integer number (6542289).

Almost surely, 2^101621166 is an apocalyptic number.

101621166 is an abundant number, since it is smaller than the sum of its proper divisors (107732082).

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

101621166 is a wasteful number, since it uses less digits than its factorization.

101621166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 101621166 is about 10080.7324138676. The cubic root of 101621166 is about 466.6537117719.

Adding to 101621166 its reverse (661126101), we get a palindrome (762747267).

The spelling of 101621166 in words is "one hundred one million, six hundred twenty-one thousand, one hundred sixty-six".