1111210120021 has 8 divisors (see below), whose sum is σ = 1170039872000. Its totient is φ = 1052414868960.

The previous prime is 1111210120019. The next prime is 1111210120067. The reversal of 1111210120021 is 1200210121111.

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 1111210120021 - 2¹ = 1111210120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111210119983 and 1111210120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111210180021) 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, 8559096 + ... + 8687953.

It is an arithmetic number, because the mean of its divisors is an integer number (146254984000).

Almost surely, 2^{1111210120021} is an apocalyptic number.

It is an amenable number.

1111210120021 is a deficient number, since it is larger than the sum of its proper divisors (58829751979).

1111210120021 is a wasteful number, since it uses less digits than its factorization.

1111210120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17250459.

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

Adding to 1111210120021 its reverse (1200210121111), we get a palindrome (2311420241132).

The spelling of 1111210120021 in words is "one trillion, one hundred eleven billion, two hundred ten million, one hundred twenty thousand, twenty-one".