42022224121 has 4 divisors (see below), whose sum is σ = 42022634112. Its totient is φ = 42021814132.

The previous prime is 42022224113. The next prime is 42022224137. The reversal of 42022224121 is 12142222024.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42022224121 - 2³ = 42022224113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42022224092 and 42022224101.

It is not an unprimeable number, because it can be changed into a prime (42022284121) 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, 101220 + ... + 307066.

It is an arithmetic number, because the mean of its divisors is an integer number (10505658528).

Almost surely, 2^42022224121 is an apocalyptic number.

It is an amenable number.

42022224121 is a deficient number, since it is larger than the sum of its proper divisors (409991).

42022224121 is a wasteful number, since it uses less digits than its factorization.

42022224121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409990.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 42022224121 its reverse (12142222024), we get a palindrome (54164446145).

The spelling of 42022224121 in words is "forty-two billion, twenty-two million, two hundred twenty-four thousand, one hundred twenty-one".