100121021121211 has 2 divisors, whose sum is σ = 100121021121212. Its totient is φ = 100121021121210.

The previous prime is 100121021121127. The next prime is 100121021121259. The reversal of 100121021121211 is 112121120121001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100121021121211 - 2¹⁷ = 100121020990139 is a prime.

It is not a weakly prime, because it can be changed into another prime (100121021191211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060510560605 + 50060510560606.

It is an arithmetic number, because the mean of its divisors is an integer number (50060510560606).

Almost surely, 2^{100121021121211} is an apocalyptic number.

100121021121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121021121211 is an equidigital number, since it uses as much as digits as its factorization.

100121021121211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 100121021121211 its reverse (112121120121001), we get a palindrome (212242141242212).

The spelling of 100121021121211 in words is "one hundred trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty-one thousand, two hundred eleven".