201120221101021 has 2 divisors, whose sum is σ = 201120221101022. Its totient is φ = 201120221101020.

The previous prime is 201120221101001. The next prime is 201120221101031. The reversal of 201120221101021 is 120101122021102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171026603465796 + 30093617635225 = 13077714^2 + 5485765^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120221101021 - 2⁵ = 201120221100989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201120221100986 and 201120221101004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201120221101001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560110550510 + 100560110550511.

It is an arithmetic number, because the mean of its divisors is an integer number (100560110550511).

Almost surely, 2^{201120221101021} is an apocalyptic number.

It is an amenable number.

201120221101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120221101021 is an equidigital number, since it uses as much as digits as its factorization.

201120221101021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201120221101021 its reverse (120101122021102), we get a palindrome (321221343122123).

The spelling of 201120221101021 in words is "two hundred one trillion, one hundred twenty billion, two hundred twenty-one million, one hundred one thousand, twenty-one".