2011012211969 has 2 divisors, whose sum is σ = 2011012211970. Its totient is φ = 2011012211968.

The previous prime is 2011012211953. The next prime is 2011012212037. The reversal of 2011012211969 is 9691122101102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210631482369 + 800380729600 = 1100287^2 + 894640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011012211969 - 2⁴ = 2011012211953 is a prime.

It is a super-2 number, since 2×2011012211969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2011012211939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005506105984 + 1005506105985.

It is an arithmetic number, because the mean of its divisors is an integer number (1005506105985).

Almost surely, 2^{2011012211969} is an apocalyptic number.

It is an amenable number.

2011012211969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011012211969 is an equidigital number, since it uses as much as digits as its factorization.

2011012211969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 2011012211969 in words is "two trillion, eleven billion, twelve million, two hundred eleven thousand, nine hundred sixty-nine".