1211023230121 has 8 divisors (see below), whose sum is σ = 1219990464000. Its totient is φ = 1202059637040.

The previous prime is 1211023230113. The next prime is 1211023230139. The reversal of 1211023230121 is 1210323201121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211023230121 - 2³ = 1211023230113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211023230101) 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 7 ways as a sum of consecutive naturals, for example, 240670 + ... + 1574791.

It is an arithmetic number, because the mean of its divisors is an integer number (152498808000).

Almost surely, 2^{1211023230121} is an apocalyptic number.

It is an amenable number.

1211023230121 is a deficient number, since it is larger than the sum of its proper divisors (8967233879).

1211023230121 is a wasteful number, since it uses less digits than its factorization.

1211023230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820399.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1211023230121 its reverse (1210323201121), we get a palindrome (2421346431242).

The spelling of 1211023230121 in words is "one trillion, two hundred eleven billion, twenty-three million, two hundred thirty thousand, one hundred twenty-one".