1201423040121 has 32 divisors (see below), whose sum is σ = 1661804863488. Its totient is φ = 771602734080.

The previous prime is 1201423040113. The next prime is 1201423040123. The reversal of 1201423040121 is 1210403241021.

It is not a de Polignac number, because 1201423040121 - 2³ = 1201423040113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201423040123) 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, 2982105 + ... + 3360921.

It is an arithmetic number, because the mean of its divisors is an integer number (51931401984).

Almost surely, 2^{1201423040121} is an apocalyptic number.

It is an amenable number.

1201423040121 is a deficient number, since it is larger than the sum of its proper divisors (460381823367).

1201423040121 is a wasteful number, since it uses less digits than its factorization.

1201423040121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379221.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1201423040121 its reverse (1210403241021), we get a palindrome (2411826281142).

The spelling of 1201423040121 in words is "one trillion, two hundred one billion, four hundred twenty-three million, forty thousand, one hundred twenty-one".