1201210110001 has 48 divisors (see below), whose sum is σ = 1372922611200. Its totient is φ = 1049412672000.

The previous prime is 1201210109999. The next prime is 1201210110059. The reversal of 1201210110001 is 1000110121021.

It is not a de Polignac number, because 1201210110001 - 2¹ = 1201210109999 is a prime.

It is a super-2 number, since 2×1201210110001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201210110001.

It is not an unprimeable number, because it can be changed into a prime (1201210110101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119649340 + ... + 119659378.

It is an arithmetic number, because the mean of its divisors is an integer number (28602554400).

Almost surely, 2^{1201210110001} is an apocalyptic number.

1201210110001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201210110001 is a deficient number, since it is larger than the sum of its proper divisors (171712501199).

1201210110001 is a wasteful number, since it uses less digits than its factorization.

1201210110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462 (or 10451 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1201210110001 its reverse (1000110121021), we get a palindrome (2201320231022).

It can be divided in two parts, 120 and 1210110001, that added together give a palindrome (1210110121).

The spelling of 1201210110001 in words is "one trillion, two hundred one billion, two hundred ten million, one hundred ten thousand, one".