200211001021121 has 2 divisors, whose sum is σ = 200211001021122. Its totient is φ = 200211001021120.

The previous prime is 200211001021099. The next prime is 200211001021147. The reversal of 200211001021121 is 121120100112002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105461315758096 + 94749685263025 = 10269436^2 + 9733945^2 .

It is a cyclic number.

It is not a de Polignac number, because 200211001021121 - 2¹⁰ = 200211001020097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200211001021096 and 200211001021105.

It is not a weakly prime, because it can be changed into another prime (200211001021321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100105500510560 + 100105500510561.

It is an arithmetic number, because the mean of its divisors is an integer number (100105500510561).

Almost surely, 2^{200211001021121} is an apocalyptic number.

It is an amenable number.

200211001021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200211001021121 is an equidigital number, since it uses as much as digits as its factorization.

200211001021121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200211001021121 its reverse (121120100112002), we get a palindrome (321331101133123).

The spelling of 200211001021121 in words is "two hundred trillion, two hundred eleven billion, one million, twenty-one thousand, one hundred twenty-one".