10100012120001 has 16 divisors (see below), whose sum is σ = 15173727131520. Its totient is φ = 6638505617520.

The previous prime is 10100012119999. The next prime is 10100012120027. The reversal of 10100012120001 is 10002121000101.

It is a happy number.

It is not a de Polignac number, because 10100012120001 - 2¹ = 10100012119999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10100012120071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2634325710 + ... + 2634329543.

It is an arithmetic number, because the mean of its divisors is an integer number (948357945720).

Almost surely, 2^{10100012120001} is an apocalyptic number.

It is an amenable number.

10100012120001 is a deficient number, since it is larger than the sum of its proper divisors (5073715011519).

10100012120001 is an equidigital number, since it uses as much as digits as its factorization.

10100012120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268655333 (or 5268655327 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10100012120001 its reverse (10002121000101), we get a palindrome (20102133120102).

The spelling of 10100012120001 in words is "ten trillion, one hundred billion, twelve million, one hundred twenty thousand, one".