1101212112121 has 8 divisors (see below), whose sum is σ = 1201340376864. Its totient is φ = 1001086859520.

The previous prime is 1101212112089. The next prime is 1101212112157. The reversal of 1101212112121 is 1212112121011.

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

It is not a de Polignac number, because 1101212112121 - 2⁵ = 1101212112089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101212112095 and 1101212112104.

It is not an unprimeable number, because it can be changed into a prime (1101212115121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48486 + ... + 1484848.

It is an arithmetic number, because the mean of its divisors is an integer number (150167547108).

Almost surely, 2^{1101212112121} is an apocalyptic number.

1101212112121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101212112121 is a deficient number, since it is larger than the sum of its proper divisors (100128264743).

1101212112121 is a wasteful number, since it uses less digits than its factorization.

1101212112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506071.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1101212112121 its reverse (1212112121011), we get a palindrome (2313324233132).

The spelling of 1101212112121 in words is "one trillion, one hundred one billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".