210212011110121 has 2 divisors, whose sum is σ = 210212011110122. Its totient is φ = 210212011110120.

The previous prime is 210212011110109. The next prime is 210212011110133. The reversal of 210212011110121 is 121011110212012.

It is a balanced prime because it is at equal distance from previous prime (210212011110109) and next prime (210212011110133).

It can be written as a sum of positive squares in only one way, i.e., 183275277926400 + 26936733183721 = 13537920^2 + 5190061^2 .

It is a cyclic number.

It is not a de Polignac number, because 210212011110121 - 2¹³ = 210212011101929 is a prime.

It is a super-2 number, since 2×210212011110121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210212011110095 and 210212011110104.

It is not a weakly prime, because it can be changed into another prime (210212011114121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105106005555060 + 105106005555061.

It is an arithmetic number, because the mean of its divisors is an integer number (105106005555061).

Almost surely, 2^{210212011110121} is an apocalyptic number.

It is an amenable number.

210212011110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210212011110121 is an equidigital number, since it uses as much as digits as its factorization.

210212011110121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 210212011110121 its reverse (121011110212012), we get a palindrome (331223121322133).

The spelling of 210212011110121 in words is "two hundred ten trillion, two hundred twelve billion, eleven million, one hundred ten thousand, one hundred twenty-one".