21401120304140 has 24 divisors (see below), whose sum is σ = 46492088937840. Its totient is φ = 8265260255168.

The previous prime is 21401120304073. The next prime is 21401120304149. The reversal of 21401120304140 is 4140302110412.

It is a super-2 number, since 2×21401120304140² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21401120304149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18449241062 + ... + 18449242221.

It is an arithmetic number, because the mean of its divisors is an integer number (1937170372410).

Almost surely, 2^{21401120304140} is an apocalyptic number.

21401120304140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21401120304140 is an abundant number, since it is smaller than the sum of its proper divisors (25090968633700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21401120304140 is a wasteful number, since it uses less digits than its factorization.

21401120304140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36898483321 (or 36898483319 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21401120304140 its reverse (4140302110412), we get a palindrome (25541422414552).

The spelling of 21401120304140 in words is "twenty-one trillion, four hundred one billion, one hundred twenty million, three hundred four thousand, one hundred forty".