1112121201021 has 8 divisors (see below), whose sum is σ = 1483383437184. Its totient is φ = 741136549440.

The previous prime is 1112121201013. The next prime is 1112121201071. The reversal of 1112121201021 is 1201021212111.

It is a happy number.

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

It is not a de Polignac number, because 1112121201021 - 2³ = 1112121201013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112121201001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69386796 + ... + 69402821.

It is an arithmetic number, because the mean of its divisors is an integer number (185422929648).

Almost surely, 2^{1112121201021} is an apocalyptic number.

It is an amenable number.

1112121201021 is a deficient number, since it is larger than the sum of its proper divisors (371262236163).

1112121201021 is a wasteful number, since it uses less digits than its factorization.

1112121201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138792291.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1112121201021 its reverse (1201021212111), we get a palindrome (2313142413132).

The spelling of 1112121201021 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, two hundred one thousand, twenty-one".