1213000201121 has 4 divisors (see below), whose sum is σ = 1213043521200. Its totient is φ = 1212956881044.

The previous prime is 1213000201073. The next prime is 1213000201159. The reversal of 1213000201121 is 1211020003121.

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 1213000201121 - 2⁶ = 1213000201057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213000201096 and 1213000201105.

It is not an unprimeable number, because it can be changed into a prime (1213000201181) 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 3 ways as a sum of consecutive naturals, for example, 21618011 + ... + 21674048.

It is an arithmetic number, because the mean of its divisors is an integer number (303260880300).

Almost surely, 2^{1213000201121} is an apocalyptic number.

It is an amenable number.

1213000201121 is a deficient number, since it is larger than the sum of its proper divisors (43320079).

1213000201121 is an equidigital number, since it uses as much as digits as its factorization.

1213000201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43320078.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1213000201121 its reverse (1211020003121), we get a palindrome (2424020204242).

The spelling of 1213000201121 in words is "one trillion, two hundred thirteen billion, two hundred one thousand, one hundred twenty-one".