102520101 has 8 divisors (see below), whose sum is σ = 136803744. Its totient is φ = 68291600.

The previous prime is 102520097. The next prime is 102520139. The reversal of 102520101 is 101025201.

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 102520101 - 2² = 102520097 is a prime.

It is a super-2 number, since 2×102520101² = 21020742218100402, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102510101) 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, 9231 + ... + 17036.

It is an arithmetic number, because the mean of its divisors is an integer number (17100468).

Almost surely, 2^102520101 is an apocalyptic number.

It is an amenable number.

102520101 is a deficient number, since it is larger than the sum of its proper divisors (34283643).

102520101 is a wasteful number, since it uses less digits than its factorization.

102520101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27571.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 102520101 is about 10125.2210346244. The cubic root of 102520101 is about 468.0256715774.

Adding to 102520101 its reverse (101025201), we get a palindrome (203545302).

The spelling of 102520101 in words is "one hundred two million, five hundred twenty thousand, one hundred one".