101016521 has 4 divisors (see below), whose sum is σ = 106333200. Its totient is φ = 95699844.

The previous prime is 101016511. The next prime is 101016523. The reversal of 101016521 is 125610101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101016521 - 2¹⁸ = 100754377 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101016521.

It is not an unprimeable number, because it can be changed into a prime (101016523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2658311 + ... + 2658348.

It is an arithmetic number, because the mean of its divisors is an integer number (26583300).

Almost surely, 2^101016521 is an apocalyptic number.

It is an amenable number.

101016521 is a deficient number, since it is larger than the sum of its proper divisors (5316679).

101016521 is an equidigital number, since it uses as much as digits as its factorization.

101016521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316678.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 101016521 is about 10050.6975379821. The cubic root of 101016521 is about 465.7263416251.

Adding to 101016521 its reverse (125610101), we get a palindrome (226626622).

The spelling of 101016521 in words is "one hundred one million, sixteen thousand, five hundred twenty-one".