121413155051 has 32 divisors (see below), whose sum is σ = 132694632000. Its totient is φ = 110831777280.

The previous prime is 121413155041. The next prime is 121413155053. The reversal of 121413155051 is 150551314121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-121413155051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121413155053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5421425 + ... + 5443773.

It is an arithmetic number, because the mean of its divisors is an integer number (4146707250).

Almost surely, 2^121413155051 is an apocalyptic number.

121413155051 is a deficient number, since it is larger than the sum of its proper divisors (11281476949).

121413155051 is a wasteful number, since it uses less digits than its factorization.

121413155051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22559.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 121413155051 its reverse (150551314121), we get a palindrome (271964469172).

The spelling of 121413155051 in words is "one hundred twenty-one billion, four hundred thirteen million, one hundred fifty-five thousand, fifty-one".