1200011121001 has 12 divisors (see below), whose sum is σ = 1507451987776. Its totient is φ = 935073600120.

The previous prime is 1200011120993. The next prime is 1200011121091. The reversal of 1200011121001 is 1001211100021.

It is not a de Polignac number, because 1200011121001 - 2³ = 1200011120993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200011121091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708388245 + ... + 708389938.

Almost surely, 2^{1200011121001} is an apocalyptic number.

1200011121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200011121001 is a deficient number, since it is larger than the sum of its proper divisors (307440866775).

1200011121001 is a wasteful number, since it uses less digits than its factorization.

1200011121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416778212 (or 1416778201 counting only the distinct ones).

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

Adding to 1200011121001 its reverse (1001211100021), we get a palindrome (2201222221022).

The spelling of 1200011121001 in words is "one trillion, two hundred billion, eleven million, one hundred twenty-one thousand, one".