101220164 has 12 divisors (see below), whose sum is σ = 180138000. Its totient is φ = 49752168.

The previous prime is 101220157. The next prime is 101220169. The reversal of 101220164 is 461022101.

It is not an unprimeable number, because it can be changed into a prime (101220169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214214 + ... + 214685.

It is an arithmetic number, because the mean of its divisors is an integer number (15011500).

Almost surely, 2^101220164 is an apocalyptic number.

It is an amenable number.

101220164 is a deficient number, since it is larger than the sum of its proper divisors (78917836).

101220164 is a wasteful number, since it uses less digits than its factorization.

101220164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428962 (or 428960 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 101220164 is about 10060.8232267544. The cubic root of 101220164 is about 466.0390899687.

Adding to 101220164 its reverse (461022101), we get a palindrome (562242265).

The spelling of 101220164 in words is "one hundred one million, two hundred twenty thousand, one hundred sixty-four".