121401412154 has 16 divisors (see below), whose sum is σ = 199754414496. Its totient is φ = 54877582800.

The previous prime is 121401412151. The next prime is 121401412193. The reversal of 121401412154 is 451214104121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121401412151) 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, 15239792 + ... + 15247755.

It is an arithmetic number, because the mean of its divisors is an integer number (12484650906).

Almost surely, 2^121401412154 is an apocalyptic number.

121401412154 is a deficient number, since it is larger than the sum of its proper divisors (78353002342).

121401412154 is a wasteful number, since it uses less digits than its factorization.

121401412154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30487741.

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 121401412154 its reverse (451214104121), we get a palindrome (572615516275).

The spelling of 121401412154 in words is "one hundred twenty-one billion, four hundred one million, four hundred twelve thousand, one hundred fifty-four".