21142223030 has 8 divisors (see below), whose sum is σ = 38056001472. Its totient is φ = 8456889208.

The previous prime is 21142222973. The next prime is 21142223033. The reversal of 21142223030 is 3032224112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21142222993 and 21142223011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142223033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057111142 + ... + 1057111161.

It is an arithmetic number, because the mean of its divisors is an integer number (4757000184).

Almost surely, 2^21142223030 is an apocalyptic number.

21142223030 is a deficient number, since it is larger than the sum of its proper divisors (16913778442).

21142223030 is a wasteful number, since it uses less digits than its factorization.

21142223030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114222310.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21142223030 its reverse (3032224112), we get a palindrome (24174447142).

The spelling of 21142223030 in words is "twenty-one billion, one hundred forty-two million, two hundred twenty-three thousand, thirty".