1101211112121 has 16 divisors (see below), whose sum is σ = 1508988423360. Its totient is φ = 713936381760.

The previous prime is 1101211112087. The next prime is 1101211112137. The reversal of 1101211112121 is 1212111121011.

It is not a de Polignac number, because 1101211112121 - 2¹⁰ = 1101211111097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101211112121.

It is not an unprimeable number, because it can be changed into a prime (1101211112171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18609150 + ... + 18668231.

It is an arithmetic number, because the mean of its divisors is an integer number (94311776460).

Almost surely, 2^{1101211112121} is an apocalyptic number.

It is an amenable number.

1101211112121 is a deficient number, since it is larger than the sum of its proper divisors (407777311239).

1101211112121 is a wasteful number, since it uses less digits than its factorization.

1101211112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37277656.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1101211112121 its reverse (1212111121011), we get a palindrome (2313322233132).

The spelling of 1101211112121 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-one".