1144015021421 has 8 divisors (see below), whose sum is σ = 1155835933560. Its totient is φ = 1132194659328.

The previous prime is 1144015021417. The next prime is 1144015021427. The reversal of 1144015021421 is 1241205104411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 672258967396 + 471756054025 = 819914^2 + 686845^2 .

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 1144015021421 - 2² = 1144015021417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144015021427) 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, 5048465 + ... + 5270201.

It is an arithmetic number, because the mean of its divisors is an integer number (144479491695).

Almost surely, 2^{1144015021421} is an apocalyptic number.

It is an amenable number.

1144015021421 is a deficient number, since it is larger than the sum of its proper divisors (11820912139).

1144015021421 is an equidigital number, since it uses as much as digits as its factorization.

1144015021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275023.

The product of its (nonzero) digits is 1280, while the sum is 26.

The spelling of 1144015021421 in words is "one trillion, one hundred forty-four billion, fifteen million, twenty-one thousand, four hundred twenty-one".