121112220110213 has 4 divisors (see below), whose sum is σ = 121501648471008. Its totient is φ = 120722791749420.

The previous prime is 121112220110201. The next prime is 121112220110221. The reversal of 121112220110213 is 312011022211121.

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 121112220110213 - 2¹⁴ = 121112220093829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112220110263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194714179931 + ... + 194714180552.

It is an arithmetic number, because the mean of its divisors is an integer number (30375412117752).

Almost surely, 2^{121112220110213} is an apocalyptic number.

It is an amenable number.

121112220110213 is a deficient number, since it is larger than the sum of its proper divisors (389428360795).

121112220110213 is an equidigital number, since it uses as much as digits as its factorization.

121112220110213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389428360794.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 121112220110213 its reverse (312011022211121), we get a palindrome (433123242321334).

The spelling of 121112220110213 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty million, one hundred ten thousand, two hundred thirteen".