1211102010001 has 8 divisors (see below), whose sum is σ = 1323730326464. Its totient is φ = 1101254639760.

The previous prime is 1211102009981. The next prime is 1211102010023. The reversal of 1211102010001 is 1000102011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211102010001 - 2⁹ = 1211102009489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211102010001.

It is not an unprimeable number, because it can be changed into a prime (1211102010071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695235645 + ... + 695237386.

It is an arithmetic number, because the mean of its divisors is an integer number (165466290808).

Almost surely, 2^{1211102010001} is an apocalyptic number.

It is an amenable number.

1211102010001 is a deficient number, since it is larger than the sum of its proper divisors (112628316463).

1211102010001 is a wasteful number, since it uses less digits than its factorization.

1211102010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390473111.

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

Adding to 1211102010001 its reverse (1000102011121), we get a palindrome (2211204021122).

The spelling of 1211102010001 in words is "one trillion, two hundred eleven billion, one hundred two million, ten thousand, one".