1112121202821 has 8 divisors (see below), whose sum is σ = 1485099066720. Its totient is φ = 740278737072.

The previous prime is 1112121202771. The next prime is 1112121202889. The reversal of 1112121202821 is 1282021212111.

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

It is not a de Polignac number, because 1112121202821 - 2³⁰ = 1111047460997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1112121202791 and 1112121202800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112121202921) 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, 283847251 + ... + 283851168.

It is an arithmetic number, because the mean of its divisors is an integer number (185637383340).

Almost surely, 2^{1112121202821} is an apocalyptic number.

It is an amenable number.

1112121202821 is a deficient number, since it is larger than the sum of its proper divisors (372977863899).

1112121202821 is an equidigital number, since it uses as much as digits as its factorization.

1112121202821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567699075.

The product of its (nonzero) digits is 256, while the sum is 24.

Adding to 1112121202821 its reverse (1282021212111), we get a palindrome (2394142414932).

The spelling of 1112121202821 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, two hundred two thousand, eight hundred twenty-one".