121210100444011 has 4 divisors (see below), whose sum is σ = 123197151271024. Its totient is φ = 119223049617000.

The previous prime is 121210100443997. The next prime is 121210100444033. The reversal of 121210100444011 is 110444001012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121210100444011 - 2⁵ = 121210100443979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210100444311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993525413415 + ... + 993525413536.

It is an arithmetic number, because the mean of its divisors is an integer number (30799287817756).

Almost surely, 2^{121210100444011} is an apocalyptic number.

121210100444011 is a deficient number, since it is larger than the sum of its proper divisors (1987050827013).

121210100444011 is an equidigital number, since it uses as much as digits as its factorization.

121210100444011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987050827012.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121210100444011 its reverse (110444001012121), we get a palindrome (231654101456132).

The spelling of 121210100444011 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred million, four hundred forty-four thousand, eleven".