121254045152205 has 96 divisors (see below), whose sum is σ = 231802348040064. Its totient is φ = 53927213889024.

The previous prime is 121254045152197. The next prime is 121254045152209. The reversal of 121254045152205 is 502251540452121.

It is not a de Polignac number, because 121254045152205 - 2³ = 121254045152197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121254045152209) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 295758339 + ... + 296168031.

It is an arithmetic number, because the mean of its divisors is an integer number (2414607792084).

Almost surely, 2^{121254045152205} is an apocalyptic number.

121254045152205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121254045152205 is a deficient number, since it is larger than the sum of its proper divisors (110548302887859).

121254045152205 is a wasteful number, since it uses less digits than its factorization.

121254045152205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420635 (or 420628 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 39.

The spelling of 121254045152205 in words is "one hundred twenty-one trillion, two hundred fifty-four billion, forty-five million, one hundred fifty-two thousand, two hundred five".