1012120220101 has 2 divisors, whose sum is σ = 1012120220102. Its totient is φ = 1012120220100.

The previous prime is 1012120220099. The next prime is 1012120220117. The reversal of 1012120220101 is 1010220212101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000020000100 + 12100220001 = 1000010^2 + 110001^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012120220101 - 2¹ = 1012120220099 is a prime.

Together with 1012120220099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012120220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506060110050 + 506060110051.

It is an arithmetic number, because the mean of its divisors is an integer number (506060110051).

Almost surely, 2^{1012120220101} is an apocalyptic number.

It is an amenable number.

1012120220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012120220101 is an equidigital number, since it uses as much as digits as its factorization.

1012120220101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012120220101 its reverse (1010220212101), we get a palindrome (2022340432202).

The spelling of 1012120220101 in words is "one trillion, twelve billion, one hundred twenty million, two hundred twenty thousand, one hundred one".