1121210433021 has 16 divisors (see below), whose sum is σ = 1711503292928. Its totient is φ = 639569617200.

The previous prime is 1121210432989. The next prime is 1121210433023. The reversal of 1121210433021 is 1203340121211.

It is not a de Polignac number, because 1121210433021 - 2⁵ = 1121210432989 is a prime.

It is a super-2 number, since 2×1121210433021² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121210433023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46740175 + ... + 46764156.

It is an arithmetic number, because the mean of its divisors is an integer number (106968955808).

Almost surely, 2^{1121210433021} is an apocalyptic number.

It is an amenable number.

1121210433021 is a deficient number, since it is larger than the sum of its proper divisors (590292859907).

1121210433021 is an equidigital number, since it uses as much as digits as its factorization.

1121210433021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93504912.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1121210433021 its reverse (1203340121211), we get a palindrome (2324550554232).

The spelling of 1121210433021 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, four hundred thirty-three thousand, twenty-one".