1211012122351 has 2 divisors, whose sum is σ = 1211012122352. Its totient is φ = 1211012122350.

The previous prime is 1211012122303. The next prime is 1211012122409. The reversal of 1211012122351 is 1532212101121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211012122351 - 2¹⁹ = 1211011598063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211012122051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605506061175 + 605506061176.

It is an arithmetic number, because the mean of its divisors is an integer number (605506061176).

Almost surely, 2^{1211012122351} is an apocalyptic number.

1211012122351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211012122351 is an equidigital number, since it uses as much as digits as its factorization.

1211012122351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 1211012122351 its reverse (1532212101121), we get a palindrome (2743224223472).

The spelling of 1211012122351 in words is "one trillion, two hundred eleven billion, twelve million, one hundred twenty-two thousand, three hundred fifty-one".