211020002110121 has 2 divisors, whose sum is σ = 211020002110122. Its totient is φ = 211020002110120.

The previous prime is 211020002110087. The next prime is 211020002110147. The reversal of 211020002110121 is 121011200020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168756207984400 + 42263794125721 = 12990620^2 + 6501061^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020002110121 - 2¹⁴ = 211020002093737 is a prime.

It is a super-2 number, since 2×211020002110121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211020002110096 and 211020002110105.

It is not a weakly prime, because it can be changed into another prime (211020002100121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510001055060 + 105510001055061.

It is an arithmetic number, because the mean of its divisors is an integer number (105510001055061).

Almost surely, 2^{211020002110121} is an apocalyptic number.

It is an amenable number.

211020002110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020002110121 is an equidigital number, since it uses as much as digits as its factorization.

211020002110121 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 14.

Adding to 211020002110121 its reverse (121011200020112), we get a palindrome (332031202130233).

The spelling of 211020002110121 in words is "two hundred eleven trillion, twenty billion, two million, one hundred ten thousand, one hundred twenty-one".