1211120102101 has 8 divisors (see below), whose sum is σ = 1490609356544. Its totient is φ = 958248871920.

The previous prime is 1211120102081. The next prime is 1211120102119. The reversal of 1211120102101 is 1012010211121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211120102101 is a prime.

It is a super-2 number, since 2×1211120102101² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211120102161) 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, 6654505965 + ... + 6654506146.

It is an arithmetic number, because the mean of its divisors is an integer number (186326169568).

Almost surely, 2^{1211120102101} is an apocalyptic number.

It is an amenable number.

1211120102101 is a deficient number, since it is larger than the sum of its proper divisors (279489254443).

1211120102101 is a wasteful number, since it uses less digits than its factorization.

1211120102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13309012131.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211120102101 its reverse (1012010211121), we get a palindrome (2223130313222).

The spelling of 1211120102101 in words is "one trillion, two hundred eleven billion, one hundred twenty million, one hundred two thousand, one hundred one".