2011211120251 has 2 divisors, whose sum is σ = 2011211120252. Its totient is φ = 2011211120250.

The previous prime is 2011211120221. The next prime is 2011211120327. The reversal of 2011211120251 is 1520211121102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011211120251 - 2³⁷ = 1873772166779 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011211120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005605560125 + 1005605560126.

It is an arithmetic number, because the mean of its divisors is an integer number (1005605560126).

Almost surely, 2^{2011211120251} is an apocalyptic number.

2011211120251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011211120251 is an equidigital number, since it uses as much as digits as its factorization.

2011211120251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 2011211120251 its reverse (1520211121102), we get a palindrome (3531422241353).

The spelling of 2011211120251 in words is "two trillion, eleven billion, two hundred eleven million, one hundred twenty thousand, two hundred fifty-one".