1212120210101 has 2 divisors, whose sum is σ = 1212120210102. Its totient is φ = 1212120210100.

The previous prime is 1212120210029. The next prime is 1212120210139. The reversal of 1212120210101 is 1010120212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764557872100 + 447562338001 = 874390^2 + 669001^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212120210101 - 2³⁴ = 1194940340917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212120210151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606060105050 + 606060105051.

It is an arithmetic number, because the mean of its divisors is an integer number (606060105051).

Almost surely, 2^{1212120210101} is an apocalyptic number.

It is an amenable number.

1212120210101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212120210101 is an equidigital number, since it uses as much as digits as its factorization.

1212120210101 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 14.

Adding to 1212120210101 its reverse (1010120212121), we get a palindrome (2222240422222).

The spelling of 1212120210101 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred ten thousand, one hundred one".