1211102120001 has 32 divisors (see below), whose sum is σ = 1683051955200. Its totient is φ = 773709984320.

The previous prime is 1211102119987. The next prime is 1211102120029. The reversal of 1211102120001 is 1000212011121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211102120001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211102120051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9511366 + ... + 9637856.

It is an arithmetic number, because the mean of its divisors is an integer number (52595373600).

Almost surely, 2^{1211102120001} is an apocalyptic number.

It is an amenable number.

1211102120001 is a deficient number, since it is larger than the sum of its proper divisors (471949835199).

1211102120001 is a wasteful number, since it uses less digits than its factorization.

1211102120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127349.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211102120001 its reverse (1000212011121), we get a palindrome (2211314131122).

The spelling of 1211102120001 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred twenty thousand, one".