102012101121501 has 20 divisors (see below), whose sum is σ = 152399433567612. Its totient is φ = 68003164476288.

The previous prime is 102012101121397. The next prime is 102012101121503. The reversal of 102012101121501 is 105121101210201.

It is a happy number.

102012101121501 is a `hidden beast` number, since 1 + 0 + 20 + 1 + 21 + 0 + 1 + 121 + 501 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25630182015876 + 76381919105625 = 5062626^2 + 8739675^2 .

It is not a de Polignac number, because 102012101121501 - 2⁹ = 102012101120989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012101121503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44266926 + ... + 46514351.

Almost surely, 2^{102012101121501} is an apocalyptic number.

It is an amenable number.

102012101121501 is a deficient number, since it is larger than the sum of its proper divisors (50387332446111).

102012101121501 is an equidigital number, since it uses as much as digits as its factorization.

102012101121501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90795162 (or 90795153 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 18.

Adding to 102012101121501 its reverse (105121101210201), we get a palindrome (207133202331702).

The spelling of 102012101121501 in words is "one hundred two trillion, twelve billion, one hundred one million, one hundred twenty-one thousand, five hundred one".