121024505225 has 24 divisors (see below), whose sum is σ = 161792061312. Its totient is φ = 89273620800.

The previous prime is 121024505221. The next prime is 121024505249. The reversal of 121024505225 is 522505420121.

It is a happy number.

It is not a de Polignac number, because 121024505225 - 2² = 121024505221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121024505221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91694 + ... + 500456.

It is an arithmetic number, because the mean of its divisors is an integer number (6741335888).

Almost surely, 2^121024505225 is an apocalyptic number.

It is an amenable number.

121024505225 is a deficient number, since it is larger than the sum of its proper divisors (40767556087).

121024505225 is a wasteful number, since it uses less digits than its factorization.

121024505225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409697 (or 409692 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 121024505225 its reverse (522505420121), we get a palindrome (643529925346).

The spelling of 121024505225 in words is "one hundred twenty-one billion, twenty-four million, five hundred five thousand, two hundred twenty-five".