172100110420 has 48 divisors (see below), whose sum is σ = 413344205568. Its totient is φ = 58962332160.

The previous prime is 172100110417. The next prime is 172100110421. The reversal of 172100110420 is 24011001271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172100110421) 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, 261072 + ... + 642151.

It is an arithmetic number, because the mean of its divisors is an integer number (8611337616).

Almost surely, 2^172100110420 is an apocalyptic number.

172100110420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172100110420 is an abundant number, since it is smaller than the sum of its proper divisors (241244095148).

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

172100110420 is a wasteful number, since it uses less digits than its factorization.

172100110420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904600 (or 904598 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 172100110420 its reverse (24011001271), we get a palindrome (196111111691).

The spelling of 172100110420 in words is "one hundred seventy-two billion, one hundred million, one hundred ten thousand, four hundred twenty".