121455150225 has 12 divisors (see below), whose sum is σ = 200805848496. Its totient is φ = 64776080080.

The previous prime is 121455150209. The next prime is 121455150281. The reversal of 121455150225 is 522051554121.

It is not a de Polignac number, because 121455150225 - 2⁴ = 121455150209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809700927 + ... + 809701076.

It is an arithmetic number, because the mean of its divisors is an integer number (16733820708).

Almost surely, 2^121455150225 is an apocalyptic number.

121455150225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121455150225 is a deficient number, since it is larger than the sum of its proper divisors (79350698271).

121455150225 is a wasteful number, since it uses less digits than its factorization.

121455150225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619402016 (or 1619402011 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 121455150225 in words is "one hundred twenty-one billion, four hundred fifty-five million, one hundred fifty thousand, two hundred twenty-five".