1111210020021 has 8 divisors (see below), whose sum is σ = 1481618364480. Its totient is φ = 740804177792.

The previous prime is 1111210020007. The next prime is 1111210020077. The reversal of 1111210020021 is 1200200121111.

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 1111210020021 - 2⁷ = 1111210019893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111210019979 and 1111210020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111210020121) 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, 1057696 + ... + 1827878.

It is an arithmetic number, because the mean of its divisors is an integer number (185202295560).

Almost surely, 2^{1111210020021} is an apocalyptic number.

It is an amenable number.

1111210020021 is a deficient number, since it is larger than the sum of its proper divisors (370408344459).

1111210020021 is an equidigital number, since it uses as much as digits as its factorization.

1111210020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251115.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1111210020021 its reverse (1200200121111), we get a palindrome (2311410141132).

It can be divided in two parts, 11112100 and 20021, that added together give a triangular number (11132121 = T₄₇₁₈).

The spelling of 1111210020021 in words is "one trillion, one hundred eleven billion, two hundred ten million, twenty thousand, twenty-one".