540012221522 has 16 divisors (see below), whose sum is σ = 832246856280. Its totient is φ = 262602499968.

The previous prime is 540012221491. The next prime is 540012221531. The reversal of 540012221522 is 225122210045.

It can be written as a sum of positive squares in 4 ways, for example, as 397680323161 + 142331898361 = 630619^2 + 377269^2 .

It is a super-2 number, since 2×540012221522² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 540012221491 and 540012221500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289747 + ... + 1656342.

Almost surely, 2^540012221522 is an apocalyptic number.

540012221522 is a deficient number, since it is larger than the sum of its proper divisors (292234634758).

540012221522 is a wasteful number, since it uses less digits than its factorization.

540012221522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948605.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 540012221522 its reverse (225122210045), we get a palindrome (765134431567).

The spelling of 540012221522 in words is "five hundred forty billion, twelve million, two hundred twenty-one thousand, five hundred twenty-two".