1211001022141 has 2 divisors, whose sum is σ = 1211001022142.
Its totient is φ = 1211001022140.
The previous prime is 1211001022123. The next prime is 1211001022159. The reversal of 1211001022141 is 1412201001121.
Adding to 1211001022141 its reverse (1412201001121), we get a palindrome (2623202023262).
It is a balanced prime because it is at equal distance from previous prime (1211001022123) and next prime (1211001022159).
It can be written as a sum of positive squares in only one way, i.e., 1040063427225 + 170937594916 = 1019835^2 + 413446^2
It is a cyclic number.
It is not a de Polignac number, because 1211001022141 - 25 = 1211001022109 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1211001025141) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500511070 + 605500511071.
It is an arithmetic number, because the mean of its divisors is an integer number (605500511071).
Almost surely, 21211001022141 is an apocalyptic number.
It is an amenable number.
1211001022141 is a deficient number, since it is larger than the sum of its proper divisors (1).
1211001022141 is an equidigital number, since it uses as much as digits as its factorization.
1211001022141 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 32, while the sum is 16.
The spelling of 1211001022141 in words is "one trillion, two hundred eleven billion, one million, twenty-two thousand, one hundred forty-one".