121234315522 has 16 divisors (see below), whose sum is σ = 182029001400. Its totient is φ = 60558012288.

The previous prime is 121234315471. The next prime is 121234315523. The reversal of 121234315522 is 225513432121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 104645133121 + 16589182401 = 323489^2 + 128799^2 .

It is not an unprimeable number, because it can be changed into a prime (121234315523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12180604 + ... + 12190552.

Almost surely, 2^121234315522 is an apocalyptic number.

121234315522 is a deficient number, since it is larger than the sum of its proper divisors (60794685878).

121234315522 is a wasteful number, since it uses less digits than its factorization.

121234315522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285.

The product of its digits is 14400, while the sum is 31.

Adding to 121234315522 its reverse (225513432121), we get a palindrome (346747747643).

The spelling of 121234315522 in words is "one hundred twenty-one billion, two hundred thirty-four million, three hundred fifteen thousand, five hundred twenty-two".