2001122077 has 2 divisors, whose sum is σ = 2001122078. Its totient is φ = 2001122076.

The previous prime is 2001122069. The next prime is 2001122083. The reversal of 2001122077 is 7702211002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1631675236 + 369446841 = 40394^2 + 19221^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001122077 - 2³ = 2001122069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001122677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000561038 + 1000561039.

It is an arithmetic number, because the mean of its divisors is an integer number (1000561039).

Almost surely, 2^2001122077 is an apocalyptic number.

It is an amenable number.

2001122077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001122077 is an equidigital number, since it uses as much as digits as its factorization.

2001122077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 2001122077 is about 44733.9029931438. The cubic root of 2001122077 is about 1260.1566272497.

Adding to 2001122077 its reverse (7702211002), we get a palindrome (9703333079).

The spelling of 2001122077 in words is "two billion, one million, one hundred twenty-two thousand, seventy-seven".