211020033121 has 2 divisors, whose sum is σ = 211020033122. Its totient is φ = 211020033120.

The previous prime is 211020033097. The next prime is 211020033131. The reversal of 211020033121 is 121330020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182021689600 + 28998343521 = 426640^2 + 170289^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020033121 - 2³⁵ = 176660294753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211020033095 and 211020033104.

It is not a weakly prime, because it can be changed into another prime (211020033131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510016560 + 105510016561.

It is an arithmetic number, because the mean of its divisors is an integer number (105510016561).

Almost surely, 2^211020033121 is an apocalyptic number.

It is an amenable number.

211020033121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020033121 is an equidigital number, since it uses as much as digits as its factorization.

211020033121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211020033121 its reverse (121330020112), we get a palindrome (332350053233).

The spelling of 211020033121 in words is "two hundred eleven billion, twenty million, thirty-three thousand, one hundred twenty-one".