1111211002021 has 8 divisors (see below), whose sum is σ = 1160073851904. Its totient is φ = 1062393929520.

The previous prime is 1111211001991. The next prime is 1111211002049. The reversal of 1111211002021 is 1202001121111.

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 not a de Polignac number, because 1111211002021 - 2¹⁷ = 1111210870949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111211001992 and 1111211002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211002051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11394726 + ... + 11491831.

It is an arithmetic number, because the mean of its divisors is an integer number (145009231488).

Almost surely, 2^{1111211002021} is an apocalyptic number.

It is an amenable number.

1111211002021 is a deficient number, since it is larger than the sum of its proper divisors (48862849883).

1111211002021 is a wasteful number, since it uses less digits than its factorization.

1111211002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888691.

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

Adding to 1111211002021 its reverse (1202001121111), we get a palindrome (2313212123132).

The spelling of 1111211002021 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two thousand, twenty-one".