100020012110001 has 12 divisors (see below), whose sum is σ = 149824215671312. Its totient is φ = 66680008073172.

The previous prime is 100020012109999. The next prime is 100020012110027. The reversal of 100020012110001 is 100011210020001.

It is a happy number.

It is not a de Polignac number, because 100020012110001 - 2¹ = 100020012109999 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020012110401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205802493811 + ... + 205802494296.

Almost surely, 2^{100020012110001} is an apocalyptic number.

It is an amenable number.

100020012110001 is a deficient number, since it is larger than the sum of its proper divisors (49804203561311).

100020012110001 is an frugal number, since it uses more digits than its factorization.

100020012110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411604988122 (or 411604988110 counting only the distinct ones).

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

Adding to 100020012110001 its reverse (100011210020001), we get a palindrome (200031222130002).

The spelling of 100020012110001 in words is "one hundred trillion, twenty billion, twelve million, one hundred ten thousand, one".