121000111213 has 8 divisors (see below), whose sum is σ = 121424168448. Its totient is φ = 120576587664.

The previous prime is 121000111189. The next prime is 121000111229. The reversal of 121000111213 is 312111000121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000111213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121000111193 and 121000111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000111313) 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, 323556 + ... + 588802.

It is an arithmetic number, because the mean of its divisors is an integer number (15178021056).

Almost surely, 2^121000111213 is an apocalyptic number.

It is an amenable number.

121000111213 is a deficient number, since it is larger than the sum of its proper divisors (424057235).

121000111213 is a wasteful number, since it uses less digits than its factorization.

121000111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266843.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121000111213 its reverse (312111000121), we get a palindrome (433111111334).

The spelling of 121000111213 in words is "one hundred twenty-one billion, one hundred eleven thousand, two hundred thirteen".