101331123120172 has 48 divisors (see below), whose sum is σ = 193659328483488. Its totient is φ = 46009844305920.

The previous prime is 101331123120121. The next prime is 101331123120173. The reversal of 101331123120172 is 271021321133101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101331123120172.

It is not an unprimeable number, because it can be changed into a prime (101331123120173) 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, 896544208 + ... + 896657224.

It is an arithmetic number, because the mean of its divisors is an integer number (4034569343406).

Almost surely, 2^{101331123120172} is an apocalyptic number.

It is an amenable number.

101331123120172 is a deficient number, since it is larger than the sum of its proper divisors (92328205363316).

101331123120172 is a wasteful number, since it uses less digits than its factorization.

101331123120172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134866 (or 134864 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 101331123120172 its reverse (271021321133101), we get a palindrome (372352444253273).

The spelling of 101331123120172 in words is "one hundred one trillion, three hundred thirty-one billion, one hundred twenty-three million, one hundred twenty thousand, one hundred seventy-two".