1012121222141 has 2 divisors, whose sum is σ = 1012121222142. Its totient is φ = 1012121222140.

The previous prime is 1012121222137. The next prime is 1012121222227. The reversal of 1012121222141 is 1412221212101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532821162916 + 479300059225 = 729946^2 + 692315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012121222141 - 2² = 1012121222137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012124222141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506060611070 + 506060611071.

It is an arithmetic number, because the mean of its divisors is an integer number (506060611071).

Almost surely, 2^{1012121222141} is an apocalyptic number.

It is an amenable number.

1012121222141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012121222141 is an equidigital number, since it uses as much as digits as its factorization.

1012121222141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1012121222141 its reverse (1412221212101), we get a palindrome (2424342434242).

The spelling of 1012121222141 in words is "one trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred forty-one".