212111202111251 has 2 divisors, whose sum is σ = 212111202111252. Its totient is φ = 212111202111250.

The previous prime is 212111202111191. The next prime is 212111202111301. The reversal of 212111202111251 is 152111202111212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212111202111251 - 2³⁰ = 212110128369427 is a prime.

It is a super-2 number, since 2×212111202111251² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212111202117251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055601055625 + 106055601055626.

It is an arithmetic number, because the mean of its divisors is an integer number (106055601055626).

Almost surely, 2^{212111202111251} is an apocalyptic number.

212111202111251 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111202111251 is an equidigital number, since it uses as much as digits as its factorization.

212111202111251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 23.

Adding to 212111202111251 its reverse (152111202111212), we get a palindrome (364222404222463).

The spelling of 212111202111251 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, two hundred fifty-one".