1213204023121 has 8 divisors (see below), whose sum is σ = 1232732623104. Its totient is φ = 1193822809200.

The previous prime is 1213204023043. The next prime is 1213204023131.

1213204023121 is nontrivially palindromic in base 10.

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 1213204023121 - 2²⁵ = 1213170468689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213204023092 and 1213204023101.

It is not an unprimeable number, because it can be changed into a prime (1213204023131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36829921 + ... + 36862846.

It is an arithmetic number, because the mean of its divisors is an integer number (154091577888).

Almost surely, 2^{1213204023121} is an apocalyptic number.

It is an amenable number.

1213204023121 is a deficient number, since it is larger than the sum of its proper divisors (19528599983).

1213204023121 is a wasteful number, since it uses less digits than its factorization.

1213204023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73693031.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 1213204023121 in words is "one trillion, two hundred thirteen billion, two hundred four million, twenty-three thousand, one hundred twenty-one".