2011221112973 has 2 divisors, whose sum is σ = 2011221112974. Its totient is φ = 2011221112972.

The previous prime is 2011221112963. The next prime is 2011221113003. The reversal of 2011221112973 is 3792111221102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982652676489 + 28568436484 = 1408067^2 + 169022^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011221112973 - 2²⁴ = 2011204335757 is a prime.

It is a super-3 number, since 3×2011221112973³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011221112963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005610556486 + 1005610556487.

It is an arithmetic number, because the mean of its divisors is an integer number (1005610556487).

Almost surely, 2^{2011221112973} is an apocalyptic number.

It is an amenable number.

2011221112973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011221112973 is an equidigital number, since it uses as much as digits as its factorization.

2011221112973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 2011221112973 in words is "two trillion, eleven billion, two hundred twenty-one million, one hundred twelve thousand, nine hundred seventy-three".