101221120211069 has 2 divisors, whose sum is σ = 101221120211070. Its totient is φ = 101221120211068.

The previous prime is 101221120211047. The next prime is 101221120211131. The reversal of 101221120211069 is 960112021122101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101102763570169 + 118356640900 = 10054987^2 + 344030^2 .

It is a cyclic number.

It is not a de Polignac number, because 101221120211069 - 2¹⁶ = 101221120145533 is a prime.

It is a super-2 number, since 2×101221120211069² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221120211039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610560105534 + 50610560105535.

It is an arithmetic number, because the mean of its divisors is an integer number (50610560105535).

Almost surely, 2^{101221120211069} is an apocalyptic number.

It is an amenable number.

101221120211069 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221120211069 is an equidigital number, since it uses as much as digits as its factorization.

101221120211069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 101221120211069 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, sixty-nine".