121356144001 has 32 divisors (see below), whose sum is σ = 131054837760. Its totient is φ = 112092820224.

The previous prime is 121356143989. The next prime is 121356144017. The reversal of 121356144001 is 100441653121.

It is a cyclic number.

It is not a de Polignac number, because 121356144001 - 2¹³ = 121356135809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121356144031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53530470 + ... + 53532736.

It is an arithmetic number, because the mean of its divisors is an integer number (4095463680).

Almost surely, 2^121356144001 is an apocalyptic number.

It is an amenable number.

121356144001 is a deficient number, since it is larger than the sum of its proper divisors (9698693759).

121356144001 is a wasteful number, since it uses less digits than its factorization.

121356144001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 121356144001 its reverse (100441653121), we get a palindrome (221797797122).

The spelling of 121356144001 in words is "one hundred twenty-one billion, three hundred fifty-six million, one hundred forty-four thousand, one".