21142101330 has 128 divisors (see below), whose sum is σ = 64771522560. Its totient is φ = 4807097280.

The previous prime is 21142101319. The next prime is 21142101349. The reversal of 21142101330 is 3310124112.

21142101330 is a `hidden beast` number, since 211 + 421 + 0 + 1 + 3 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 331707 + ... + 390273.

It is an arithmetic number, because the mean of its divisors is an integer number (506027520).

Almost surely, 2^21142101330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21142101330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32385761280).

21142101330 is an abundant number, since it is smaller than the sum of its proper divisors (43629421230).

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

21142101330 is a wasteful number, since it uses less digits than its factorization.

21142101330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58781 (or 58775 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21142101330 its reverse (3310124112), we get a palindrome (24452225442).

The spelling of 21142101330 in words is "twenty-one billion, one hundred forty-two million, one hundred one thousand, three hundred thirty".