2021002544144 has 10 divisors (see below), whose sum is σ = 3915692429310. Its totient is φ = 1010501272064.

The previous prime is 2021002544137. The next prime is 2021002544161. The reversal of 2021002544144 is 4414452001202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1202136816400 + 818865727744 = 1096420^2 + 904912^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63156329489 + ... + 63156329520.

It is an arithmetic number, because the mean of its divisors is an integer number (391569242931).

Almost surely, 2^{2021002544144} is an apocalyptic number.

It is an amenable number.

2021002544144 is a deficient number, since it is larger than the sum of its proper divisors (1894689885166).

2021002544144 is a wasteful number, since it uses less digits than its factorization.

2021002544144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126312659017 (or 126312659011 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 2021002544144 its reverse (4414452001202), we get a palindrome (6435454545346).

The spelling of 2021002544144 in words is "two trillion, twenty-one billion, two million, five hundred forty-four thousand, one hundred forty-four".