522022136642 has 4 divisors (see below), whose sum is σ = 783033204966. Its totient is φ = 261011068320.

The previous prime is 522022136611. The next prime is 522022136711. The reversal of 522022136642 is 246631220225.

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., 386052211561 + 135969925081 = 621331^2 + 368741^2 .

It is a super-2 number, since 2×522022136642² (a number of 24 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, 130505534159 + ... + 130505534162.

Almost surely, 2^522022136642 is an apocalyptic number.

522022136642 is a deficient number, since it is larger than the sum of its proper divisors (261011068324).

522022136642 is a wasteful number, since it uses less digits than its factorization.

522022136642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261011068323.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 522022136642 its reverse (246631220225), we get a palindrome (768653356867).

The spelling of 522022136642 in words is "five hundred twenty-two billion, twenty-two million, one hundred thirty-six thousand, six hundred forty-two".