121401425154 has 8 divisors (see below), whose sum is σ = 242802850320. Its totient is φ = 40467141716.

The previous prime is 121401425153. The next prime is 121401425191. The reversal of 121401425154 is 451524104121.

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

121401425154 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (121401425153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10116785424 + ... + 10116785435.

It is an arithmetic number, because the mean of its divisors is an integer number (30350356290).

Almost surely, 2^121401425154 is an apocalyptic number.

121401425154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121401425154 is a wasteful number, since it uses less digits than its factorization.

121401425154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20233570864.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 121401425154 its reverse (451524104121), we get a palindrome (572925529275).

The spelling of 121401425154 in words is "one hundred twenty-one billion, four hundred one million, four hundred twenty-five thousand, one hundred fifty-four".