121205504150121 has 8 divisors (see below), whose sum is σ = 162057498586560. Its totient is φ = 80578589573552.

The previous prime is 121205504150069. The next prime is 121205504150147. The reversal of 121205504150121 is 121051405502121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121205504150121 - 2¹⁰ = 121205504149097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121205504150221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56269963710 + ... + 56269965863.

It is an arithmetic number, because the mean of its divisors is an integer number (20257187323320).

Almost surely, 2^{121205504150121} is an apocalyptic number.

It is an amenable number.

121205504150121 is a deficient number, since it is larger than the sum of its proper divisors (40851994436439).

121205504150121 is a wasteful number, since it uses less digits than its factorization.

121205504150121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112539929935.

The product of its (nonzero) digits is 4000, while the sum is 30.

Adding to 121205504150121 its reverse (121051405502121), we get a palindrome (242256909652242).

The spelling of 121205504150121 in words is "one hundred twenty-one trillion, two hundred five billion, five hundred four million, one hundred fifty thousand, one hundred twenty-one".