2010111211261 has 2 divisors, whose sum is σ = 2010111211262. Its totient is φ = 2010111211260.

The previous prime is 2010111211219. The next prime is 2010111211267. The reversal of 2010111211261 is 1621121110102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2005605445636 + 4505765625 = 1416194^2 + 67125^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010111211261 - 2²⁷ = 2009976993533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2010111211267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005055605630 + 1005055605631.

It is an arithmetic number, because the mean of its divisors is an integer number (1005055605631).

Almost surely, 2^{2010111211261} is an apocalyptic number.

It is an amenable number.

2010111211261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010111211261 is an equidigital number, since it uses as much as digits as its factorization.

2010111211261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 2010111211261 its reverse (1621121110102), we get a palindrome (3631232321363).

The spelling of 2010111211261 in words is "two trillion, ten billion, one hundred eleven million, two hundred eleven thousand, two hundred sixty-one".