101020010172 has 24 divisors (see below), whose sum is σ = 235720622592. Its totient is φ = 33672298800.

The previous prime is 101020010159. The next prime is 101020010173. The reversal of 101020010172 is 271010020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101020010173) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 345397 + ... + 566867.

It is an arithmetic number, because the mean of its divisors is an integer number (9821692608).

Almost surely, 2^101020010172 is an apocalyptic number.

101020010172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101020010172 is an abundant number, since it is smaller than the sum of its proper divisors (134700612420).

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

101020010172 is a wasteful number, since it uses less digits than its factorization.

101020010172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259489 (or 259487 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

Adding to 101020010172 its reverse (271010020101), we get a palindrome (372030030273).

The spelling of 101020010172 in words is "one hundred one billion, twenty million, ten thousand, one hundred seventy-two".