10100121505 has 8 divisors (see below), whose sum is σ = 12125404224. Its totient is φ = 8076591600.

The previous prime is 10100121497. The next prime is 10100121529. The reversal of 10100121505 is 50512100101.

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

It is not a de Polignac number, because 10100121505 - 2³ = 10100121497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425491 + ... + 448600.

It is an arithmetic number, because the mean of its divisors is an integer number (1515675528).

Almost surely, 2^10100121505 is an apocalyptic number.

It is an amenable number.

10100121505 is a deficient number, since it is larger than the sum of its proper divisors (2025282719).

10100121505 is an equidigital number, since it uses as much as digits as its factorization.

10100121505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876407.

The product of its (nonzero) digits is 50, while the sum is 16.

Adding to 10100121505 its reverse (50512100101), we get a palindrome (60612221606).

The spelling of 10100121505 in words is "ten billion, one hundred million, one hundred twenty-one thousand, five hundred five".