2121301220113 has 4 divisors (see below), whose sum is σ = 2213531707968. Its totient is φ = 2029070732260.

The previous prime is 2121301220099. The next prime is 2121301220117. The reversal of 2121301220113 is 3110221031212.

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 not a de Polignac number, because 2121301220113 - 2⁵ = 2121301220081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121301220117) 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, 46115243893 + ... + 46115243938.

It is an arithmetic number, because the mean of its divisors is an integer number (553382926992).

Almost surely, 2^{2121301220113} is an apocalyptic number.

2121301220113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2121301220113 is a deficient number, since it is larger than the sum of its proper divisors (92230487855).

2121301220113 is an equidigital number, since it uses as much as digits as its factorization.

2121301220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92230487854.

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

Adding to 2121301220113 its reverse (3110221031212), we get a palindrome (5231522251325).

The spelling of 2121301220113 in words is "two trillion, one hundred twenty-one billion, three hundred one million, two hundred twenty thousand, one hundred thirteen".