1121212001021 has 8 divisors (see below), whose sum is σ = 1294072126464. Its totient is φ = 951523621200.

The previous prime is 1121212001009. The next prime is 1121212001029. The reversal of 1121212001021 is 1201002121211.

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 1121212001021 - 2¹⁰ = 1121211999997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121212000987 and 1121212001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121212001029) 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, 792935645 + ... + 792937058.

It is an arithmetic number, because the mean of its divisors is an integer number (161759015808).

Almost surely, 2^{1121212001021} is an apocalyptic number.

It is an amenable number.

1121212001021 is a deficient number, since it is larger than the sum of its proper divisors (172860125443).

1121212001021 is a wasteful number, since it uses less digits than its factorization.

1121212001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585872811.

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

Adding to 1121212001021 its reverse (1201002121211), we get a palindrome (2322214122232).

The spelling of 1121212001021 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one thousand, twenty-one".