1021121310443 has 8 divisors (see below), whose sum is σ = 1111005899808. Its totient is φ = 932856263424.

The previous prime is 1021121310413. The next prime is 1021121310467. The reversal of 1021121310443 is 3440131211201.

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 1021121310443 - 2¹² = 1021121306347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021121310413) 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, 404884271 + ... + 404886792.

It is an arithmetic number, because the mean of its divisors is an integer number (138875737476).

Almost surely, 2^{1021121310443} is an apocalyptic number.

1021121310443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021121310443 is a deficient number, since it is larger than the sum of its proper divisors (89884589365).

1021121310443 is an equidigital number, since it uses as much as digits as its factorization.

1021121310443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809771173.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1021121310443 its reverse (3440131211201), we get a palindrome (4461252521644).

The spelling of 1021121310443 in words is "one trillion, twenty-one billion, one hundred twenty-one million, three hundred ten thousand, four hundred forty-three".