21142101422 has 48 divisors (see below), whose sum is σ = 34953107280. Its totient is φ = 9534260736.

The previous prime is 21142101419. The next prime is 21142101427. The reversal of 21142101422 is 22410124112.

It is a junction number, because it is equal to n+sod(n) for n = 21142101394 and 21142101403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142101427) 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, 24612029 + ... + 24612887.

It is an arithmetic number, because the mean of its divisors is an integer number (728189735).

Almost surely, 2^21142101422 is an apocalyptic number.

21142101422 is a deficient number, since it is larger than the sum of its proper divisors (13811005858).

21142101422 is a wasteful number, since it uses less digits than its factorization.

21142101422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1264 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21142101422 its reverse (22410124112), we get a palindrome (43552225534).

The spelling of 21142101422 in words is "twenty-one billion, one hundred forty-two million, one hundred one thousand, four hundred twenty-two".