1121212010021 has 8 divisors (see below), whose sum is σ = 1137474321984. Its totient is φ = 1104962770240.

The previous prime is 1121212010011. The next prime is 1121212010027. The reversal of 1121212010021 is 1200102121211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121212010021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121212009978 and 1121212010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121212010027) 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, 3095195 + ... + 3438408.

It is an arithmetic number, because the mean of its divisors is an integer number (142184290248).

Almost surely, 2^{1121212010021} is an apocalyptic number.

It is an amenable number.

1121212010021 is a deficient number, since it is larger than the sum of its proper divisors (16262311963).

1121212010021 is an equidigital number, since it uses as much as digits as its factorization.

1121212010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536091.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121212010021 its reverse (1200102121211), we get a palindrome (2321314131232).

The spelling of 1121212010021 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, ten thousand, twenty-one".