20100121100011 has 2 divisors, whose sum is σ = 20100121100012. Its totient is φ = 20100121100010.

The previous prime is 20100121100009. The next prime is 20100121100027. The reversal of 20100121100011 is 11000112100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20100121100011 - 2¹ = 20100121100009 is a prime.

It is a super-3 number, since 3×20100121100011³ (a number of 41 digits) contains 333 as substring.

Together with 20100121100009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20100121100041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050060550005 + 10050060550006.

It is an arithmetic number, because the mean of its divisors is an integer number (10050060550006).

Almost surely, 2^{20100121100011} is an apocalyptic number.

20100121100011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100121100011 is an equidigital number, since it uses as much as digits as its factorization.

20100121100011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20100121100011 its reverse (11000112100102), we get a palindrome (31100233200113).

The spelling of 20100121100011 in words is "twenty trillion, one hundred billion, one hundred twenty-one million, one hundred thousand, eleven".