142222224021 has 4 divisors (see below), whose sum is σ = 189629632032. Its totient is φ = 94814816012.

The previous prime is 142222223989. The next prime is 142222224029. The reversal of 142222224021 is 120422222241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120422222241 = 3 ⋅40140740747.

It is a cyclic number.

It is not a de Polignac number, because 142222224021 - 2⁵ = 142222223989 is a prime.

It is a super-2 number, since 2×142222224021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142222223982 and 142222224000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142222224029) 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, 23703704001 + ... + 23703704006.

It is an arithmetic number, because the mean of its divisors is an integer number (47407408008).

Almost surely, 2^142222224021 is an apocalyptic number.

It is an amenable number.

142222224021 is a deficient number, since it is larger than the sum of its proper divisors (47407408011).

142222224021 is an equidigital number, since it uses as much as digits as its factorization.

142222224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47407408010.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 142222224021 its reverse (120422222241), we get a palindrome (262644446262).

The spelling of 142222224021 in words is "one hundred forty-two billion, two hundred twenty-two million, two hundred twenty-four thousand, twenty-one".