17121010101225 has 48 divisors (see below), whose sum is σ = 29030985023040. Its totient is φ = 8898096716800.

The previous prime is 17121010101163. The next prime is 17121010101271. The reversal of 17121010101225 is 52210101012171.

It is not a de Polignac number, because 17121010101225 - 2¹⁷ = 17121009970153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17121010101195 and 17121010101204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613155 + ... + 5883704.

It is an arithmetic number, because the mean of its divisors is an integer number (604812187980).

Almost surely, 2^{17121010101225} is an apocalyptic number.

17121010101225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17121010101225 is a deficient number, since it is larger than the sum of its proper divisors (11909974921815).

17121010101225 is a wasteful number, since it uses less digits than its factorization.

17121010101225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497770 (or 6497765 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 24.

Adding to 17121010101225 its reverse (52210101012171), we get a palindrome (69331111113396).

The spelling of 17121010101225 in words is "seventeen trillion, one hundred twenty-one billion, ten million, one hundred one thousand, two hundred twenty-five".