21142222100140 has 48 divisors (see below), whose sum is σ = 45365173378560. Its totient is φ = 8274150924480.

The previous prime is 21142222100117. The next prime is 21142222100141. The reversal of 21142222100140 is 4100122224112.

It is not an unprimeable number, because it can be changed into a prime (21142222100141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42208692 + ... + 42706651.

It is an arithmetic number, because the mean of its divisors is an integer number (945107778720).

Almost surely, 2^{21142222100140} is an apocalyptic number.

21142222100140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21142222100140 is an abundant number, since it is smaller than the sum of its proper divisors (24222951278420).

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

21142222100140 is a wasteful number, since it uses less digits than its factorization.

21142222100140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84915622 (or 84915620 counting only the distinct ones).

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

Adding to 21142222100140 its reverse (4100122224112), we get a palindrome (25242344324252).

The spelling of 21142222100140 in words is "twenty-one trillion, one hundred forty-two billion, two hundred twenty-two million, one hundred thousand, one hundred forty".