121451400141 has 4 divisors (see below), whose sum is σ = 161935200192. Its totient is φ = 80967600092.

The previous prime is 121451400071. The next prime is 121451400149. The reversal of 121451400141 is 141004154121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121451400141 - 2¹⁰ = 121451399117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121451400149) 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, 20241900021 + ... + 20241900026.

It is an arithmetic number, because the mean of its divisors is an integer number (40483800048).

Almost surely, 2^121451400141 is an apocalyptic number.

It is an amenable number.

121451400141 is a deficient number, since it is larger than the sum of its proper divisors (40483800051).

121451400141 is an equidigital number, since it uses as much as digits as its factorization.

121451400141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40483800050.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 121451400141 its reverse (141004154121), we get a palindrome (262455554262).

The spelling of 121451400141 in words is "one hundred twenty-one billion, four hundred fifty-one million, four hundred thousand, one hundred forty-one".