21000124443202 has 16 divisors (see below), whose sum is σ = 32531868622080. Its totient is φ = 10161188586208.

The previous prime is 21000124443197. The next prime is 21000124443253. The reversal of 21000124443202 is 20234442100012.

It is a super-2 number, since 2×21000124443202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255079158 + ... + 1255095889.

It is an arithmetic number, because the mean of its divisors is an integer number (2033241788880).

Almost surely, 2^{21000124443202} is an apocalyptic number.

21000124443202 is a deficient number, since it is larger than the sum of its proper divisors (11531744178878).

21000124443202 is a wasteful number, since it uses less digits than its factorization.

21000124443202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510175185.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21000124443202 its reverse (20234442100012), we get a palindrome (41234566543214).

The spelling of 21000124443202 in words is "twenty-one trillion, one hundred twenty-four million, four hundred forty-three thousand, two hundred two".