210100102121111 has 2 divisors, whose sum is σ = 210100102121112. Its totient is φ = 210100102121110.

The previous prime is 210100102121093. The next prime is 210100102121167. The reversal of 210100102121111 is 111121201001012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210100102121111 - 2⁶ = 210100102121047 is a prime.

It is a super-2 number, since 2×210100102121111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210100102121311) 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, 105050051060555 + 105050051060556.

It is an arithmetic number, because the mean of its divisors is an integer number (105050051060556).

Almost surely, 2^{210100102121111} is an apocalyptic number.

210100102121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100102121111 is an equidigital number, since it uses as much as digits as its factorization.

210100102121111 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 14.

Adding to 210100102121111 its reverse (111121201001012), we get a palindrome (321221303122123).

The spelling of 210100102121111 in words is "two hundred ten trillion, one hundred billion, one hundred two million, one hundred twenty-one thousand, one hundred eleven".