21140413244102 has 48 divisors (see below), whose sum is σ = 34084314047520. Its totient is φ = 9820399034880.

The previous prime is 21140413244101. The next prime is 21140413244117. The reversal of 21140413244102 is 20144231404112.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140413244101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5632223 + ... + 8602485.

It is an arithmetic number, because the mean of its divisors is an integer number (710089875990).

Almost surely, 2^{21140413244102} is an apocalyptic number.

21140413244102 is a deficient number, since it is larger than the sum of its proper divisors (12943900803418).

21140413244102 is a wasteful number, since it uses less digits than its factorization.

21140413244102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970449 (or 2970408 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21140413244102 its reverse (20144231404112), we get a palindrome (41284644648214).

The spelling of 21140413244102 in words is "twenty-one trillion, one hundred forty billion, four hundred thirteen million, two hundred forty-four thousand, one hundred two".