10101212020111 has 2 divisors, whose sum is σ = 10101212020112. Its totient is φ = 10101212020110.

The previous prime is 10101212020073. The next prime is 10101212020117. The reversal of 10101212020111 is 11102021210101.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (11102021210101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10101212020111 - 2⁹ = 10101212019599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101212020091 and 10101212020100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101212020117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050606010055 + 5050606010056.

It is an arithmetic number, because the mean of its divisors is an integer number (5050606010056).

Almost surely, 2^{10101212020111} is an apocalyptic number.

10101212020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101212020111 is an equidigital number, since it uses as much as digits as its factorization.

10101212020111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10101212020111 its reverse (11102021210101), we get a palindrome (21203233230212).

It can be divided in two parts, 10101 and 212020111, that added together give a palindrome (212030212).

The spelling of 10101212020111 in words is "ten trillion, one hundred one billion, two hundred twelve million, twenty thousand, one hundred eleven".