121223500522 has 16 divisors (see below), whose sum is σ = 191458808640. Its totient is φ = 57405673728.

The previous prime is 121223500513. The next prime is 121223500547. The reversal of 121223500522 is 225005322121.

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, 305143 + ... + 579274.

It is an arithmetic number, because the mean of its divisors is an integer number (11966175540).

Almost surely, 2^121223500522 is an apocalyptic number.

121223500522 is a deficient number, since it is larger than the sum of its proper divisors (70235308118).

121223500522 is a wasteful number, since it uses less digits than its factorization.

121223500522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888045.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 121223500522 its reverse (225005322121), we get a palindrome (346228822643).

The spelling of 121223500522 in words is "one hundred twenty-one billion, two hundred twenty-three million, five hundred thousand, five hundred twenty-two".