1021440120411 has 8 divisors (see below), whose sum is σ = 1374414841360. Its totient is φ = 674712739872.

The previous prime is 1021440120373. The next prime is 1021440120433. The reversal of 1021440120411 is 1140210441201.

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

It is not a de Polignac number, because 1021440120411 - 2¹⁹ = 1021439596123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021440120011) 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 7 ways as a sum of consecutive naturals, for example, 1561834720 + ... + 1561835373.

It is an arithmetic number, because the mean of its divisors is an integer number (171801855170).

Almost surely, 2^{1021440120411} is an apocalyptic number.

1021440120411 is a deficient number, since it is larger than the sum of its proper divisors (352974720949).

1021440120411 is a wasteful number, since it uses less digits than its factorization.

1021440120411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123670205.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 1021440120411 its reverse (1140210441201), we get a palindrome (2161650561612).

The spelling of 1021440120411 in words is "one trillion, twenty-one billion, four hundred forty million, one hundred twenty thousand, four hundred eleven".