1201101210001 has 48 divisors (see below), whose sum is σ = 1598535775872. Its totient is φ = 880339299840.

The previous prime is 1201101209989. The next prime is 1201101210011. The reversal of 1201101210001 is 1000121011021.

It is not a de Polignac number, because 1201101210001 - 2⁷ = 1201101209873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201101210001.

It is not an unprimeable number, because it can be changed into a prime (1201101210011) 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, 24785271 + ... + 24833683.

It is an arithmetic number, because the mean of its divisors is an integer number (33302828664).

Almost surely, 2^{1201101210001} is an apocalyptic number.

1201101210001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201101210001 is a deficient number, since it is larger than the sum of its proper divisors (397434565871).

1201101210001 is a wasteful number, since it uses less digits than its factorization.

1201101210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50182 (or 50171 counting only the distinct ones).

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

Adding to 1201101210001 its reverse (1000121011021), we get a palindrome (2201222221022).

The spelling of 1201101210001 in words is "one trillion, two hundred one billion, one hundred one million, two hundred ten thousand, one".