22021142123 has 8 divisors (see below), whose sum is σ = 22413414960. Its totient is φ = 21629503840.

The previous prime is 22021142119. The next prime is 22021142131. The reversal of 22021142123 is 32124112022.

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

It is not a de Polignac number, because 22021142123 - 2² = 22021142119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021142095 and 22021142104.

It is not an unprimeable number, because it can be changed into a prime (22021142153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88340 + ... + 227697.

It is an arithmetic number, because the mean of its divisors is an integer number (2801676870).

Almost surely, 2^22021142123 is an apocalyptic number.

22021142123 is a deficient number, since it is larger than the sum of its proper divisors (392272837).

22021142123 is a wasteful number, since it uses less digits than its factorization.

22021142123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317277.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 22021142123 its reverse (32124112022), we get a palindrome (54145254145).

The spelling of 22021142123 in words is "twenty-two billion, twenty-one million, one hundred forty-two thousand, one hundred twenty-three".