1200101122001 has 4 divisors (see below), whose sum is σ = 1201223762100. Its totient is φ = 1198978481904.

The previous prime is 1200101121929. The next prime is 1200101122039. The reversal of 1200101122001 is 1002211010021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 996992265025 + 203108856976 = 998495^2 + 450676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200101122001 - 2²² = 1200096927697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200101122061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561318446 + ... + 561320583.

It is an arithmetic number, because the mean of its divisors is an integer number (300305940525).

Almost surely, 2^{1200101122001} is an apocalyptic number.

It is an amenable number.

1200101122001 is a deficient number, since it is larger than the sum of its proper divisors (1122640099).

1200101122001 is a wasteful number, since it uses less digits than its factorization.

1200101122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122640098.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200101122001 its reverse (1002211010021), we get a palindrome (2202312132022).

The spelling of 1200101122001 in words is "one trillion, two hundred billion, one hundred one million, one hundred twenty-two thousand, one".