1224121522 has 16 divisors (see below), whose sum is σ = 1981909440. Its totient is φ = 563698512.

The previous prime is 1224121519. The next prime is 1224121529. The reversal of 1224121522 is 2251214221.

It is a junction number, because it is equal to n+sod(n) for n = 1224121493 and 1224121502.

It is not an unprimeable number, because it can be changed into a prime (1224121529) 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, 41622 + ... + 64657.

It is an arithmetic number, because the mean of its divisors is an integer number (123869340).

Almost surely, 2^1224121522 is an apocalyptic number.

1224121522 is a deficient number, since it is larger than the sum of its proper divisors (757787918).

1224121522 is a wasteful number, since it uses less digits than its factorization.

1224121522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106737.

The product of its digits is 640, while the sum is 22.

The square root of 1224121522 is about 34987.4480635556. The cubic root of 1224121522 is about 1069.7316478464.

Adding to 1224121522 its reverse (2251214221), we get a palindrome (3475335743).

The spelling of 1224121522 in words is "one billion, two hundred twenty-four million, one hundred twenty-one thousand, five hundred twenty-two".