1210120200001 has 6 divisors (see below), whose sum is σ = 1212858211250. Its totient is φ = 1207388355888.

The previous prime is 1210120199983. The next prime is 1210120200103. The reversal of 1210120200001 is 1000020210121.

It can be written as a sum of positive squares in only one way, i.e., 882021505600 + 328098694401 = 939160^2 + 572799^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1210120200001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210120200901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2886876 + ... + 3279373.

Almost surely, 2^{1210120200001} is an apocalyptic number.

It is an amenable number.

1210120200001 is a deficient number, since it is larger than the sum of its proper divisors (2738011249).

1210120200001 is an frugal number, since it uses more digits than its factorization.

1210120200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167135 (or 6166692 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1210120200001 its reverse (1000020210121), we get a palindrome (2210140410122).

The spelling of 1210120200001 in words is "one trillion, two hundred ten billion, one hundred twenty million, two hundred thousand, one".