101171421572 has 24 divisors (see below), whose sum is σ = 190682755200. Its totient is φ = 46691186976.

The previous prime is 101171421523. The next prime is 101171421577. The reversal of 101171421572 is 275124171101.

101171421572 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (101171421577) 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, 766679 + ... + 888897.

It is an arithmetic number, because the mean of its divisors is an integer number (7945114800).

Almost surely, 2^101171421572 is an apocalyptic number.

It is an amenable number.

101171421572 is a deficient number, since it is larger than the sum of its proper divisors (89511333628).

101171421572 is a wasteful number, since it uses less digits than its factorization.

101171421572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138155 (or 138153 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 32.

Adding to 101171421572 its reverse (275124171101), we get a palindrome (376295592673).

The spelling of 101171421572 in words is "one hundred one billion, one hundred seventy-one million, four hundred twenty-one thousand, five hundred seventy-two".