120000211100001 has 16 divisors (see below), whose sum is σ = 177779213422720. Its totient is φ = 79999635426480.

The previous prime is 120000211099991. The next prime is 120000211100027. The reversal of 120000211100001 is 100001112000021.

It is a happy number.

It is not a de Polignac number, because 120000211100001 - 2¹⁷ = 120000210968929 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 a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120000211100401) 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, 9657670 + ... + 18255711.

It is an arithmetic number, because the mean of its divisors is an integer number (11111200838920).

Almost surely, 2^{120000211100001} is an apocalyptic number.

It is an amenable number.

120000211100001 is a deficient number, since it is larger than the sum of its proper divisors (57779002322719).

120000211100001 is a wasteful number, since it uses less digits than its factorization.

120000211100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28072613 (or 28072607 counting only the distinct ones).

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

Adding to 120000211100001 its reverse (100001112000021), we get a palindrome (220001323100022).

The spelling of 120000211100001 in words is "one hundred twenty trillion, two hundred eleven million, one hundred thousand, one".