21002404120141 has 64 divisors (see below), whose sum is σ = 22232445580800. Its totient is φ = 19814398119936.

The previous prime is 21002404120133. The next prime is 21002404120223. The reversal of 21002404120141 is 14102140420012.

It is not a de Polignac number, because 21002404120141 - 2³ = 21002404120133 is a prime.

It is a super-2 number, since 2×21002404120141² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002404120541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45957120385 + ... + 45957120841.

It is an arithmetic number, because the mean of its divisors is an integer number (347381962200).

Almost surely, 2^{21002404120141} is an apocalyptic number.

It is an amenable number.

21002404120141 is a deficient number, since it is larger than the sum of its proper divisors (1230041460659).

21002404120141 is a wasteful number, since it uses less digits than its factorization.

21002404120141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21002404120141 its reverse (14102140420012), we get a palindrome (35104544540153).

The spelling of 21002404120141 in words is "twenty-one trillion, two billion, four hundred four million, one hundred twenty thousand, one hundred forty-one".