1017252121 has 8 divisors (see below), whose sum is σ = 1024286600. Its totient is φ = 1010240640.

The previous prime is 1017252113. The next prime is 1017252133. The reversal of 1017252121 is 1212527101.

It can be written as a sum of positive squares in 4 ways, for example, as 566963721 + 450288400 = 23811^2 + 21220^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1017252121 - 2³ = 1017252113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1017252092 and 1017252101.

It is not an unprimeable number, because it can be changed into a prime (1017252101) 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, 88231 + ... + 99091.

It is an arithmetic number, because the mean of its divisors is an integer number (128035825).

Almost surely, 2^1017252121 is an apocalyptic number.

It is an amenable number.

1017252121 is a deficient number, since it is larger than the sum of its proper divisors (7034479).

1017252121 is a wasteful number, since it uses less digits than its factorization.

1017252121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 1017252121 is about 31894.3901180129. The cubic root of 1017252121 is about 1005.7179497348.

Adding to 1017252121 its reverse (1212527101), we get a palindrome (2229779222).

The spelling of 1017252121 in words is "one billion, seventeen million, two hundred fifty-two thousand, one hundred twenty-one".