121225215352 has 16 divisors (see below), whose sum is σ = 227338531200. Its totient is φ = 60601607040.

The previous prime is 121225215343. The next prime is 121225215361. The reversal of 121225215352 is 253512522121.

It is an interprime number because it is at equal distance from previous prime (121225215343) and next prime (121225215361).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328152 + ... + 1416487.

It is an arithmetic number, because the mean of its divisors is an integer number (14208658200).

Almost surely, 2^121225215352 is an apocalyptic number.

It is an amenable number.

121225215352 is a deficient number, since it is larger than the sum of its proper divisors (106113315848).

121225215352 is a wasteful number, since it uses less digits than its factorization.

121225215352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750166 (or 2750162 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

Adding to 121225215352 its reverse (253512522121), we get a palindrome (374737737473).

The spelling of 121225215352 in words is "one hundred twenty-one billion, two hundred twenty-five million, two hundred fifteen thousand, three hundred fifty-two".