22150021042 has 4 divisors (see below), whose sum is σ = 33225031566. Its totient is φ = 11075010520.

The previous prime is 22150020973. The next prime is 22150021051. The reversal of 22150021042 is 24012005122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22135190841 + 14830201 = 148779^2 + 3851^2 .

It is a super-2 number, since 2×22150021042² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5537505259 + ... + 5537505262.

Almost surely, 2^22150021042 is an apocalyptic number.

22150021042 is a deficient number, since it is larger than the sum of its proper divisors (11075010524).

22150021042 is a wasteful number, since it uses less digits than its factorization.

22150021042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11075010523.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 22150021042 its reverse (24012005122), we get a palindrome (46162026164).

The spelling of 22150021042 in words is "twenty-two billion, one hundred fifty million, twenty-one thousand, forty-two".