2021040144145 has 32 divisors (see below), whose sum is σ = 2762667233280. Its totient is φ = 1404968072640.

The previous prime is 2021040144121. The next prime is 2021040144209. The reversal of 2021040144145 is 5414410401202.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2021040144145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1278396 + ... + 2382514.

It is an arithmetic number, because the mean of its divisors is an integer number (86333351040).

Almost surely, 2^{2021040144145} is an apocalyptic number.

It is an amenable number.

2021040144145 is a deficient number, since it is larger than the sum of its proper divisors (741627089135).

2021040144145 is a wasteful number, since it uses less digits than its factorization.

2021040144145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105605.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 2021040144145 its reverse (5414410401202), we get a palindrome (7435450545347).

The spelling of 2021040144145 in words is "two trillion, twenty-one billion, forty million, one hundred forty-four thousand, one hundred forty-five".