21121344141000 has 64 divisors (see below), whose sum is σ = 65898593729280. Its totient is φ = 5632358436800.

The previous prime is 21121344140987. The next prime is 21121344141043. The reversal of 21121344141000 is 14144312112.

It is a happy number.

It is a super-2 number, since 2×21121344141000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3520221024 + ... + 3520227023.

It is an arithmetic number, because the mean of its divisors is an integer number (1029665527020).

Almost surely, 2^{21121344141000} is an apocalyptic number.

21121344141000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121344141000 is an abundant number, since it is smaller than the sum of its proper divisors (44777249588280).

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

21121344141000 is a wasteful number, since it uses less digits than its factorization.

21121344141000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040448071 (or 7040448057 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21121344141000 its reverse (14144312112), we get a palindrome (21135488453112).

The spelling of 21121344141000 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred forty-four million, one hundred forty-one thousand".