2000021010077 has 2 divisors, whose sum is σ = 2000021010078. Its totient is φ = 2000021010076.

The previous prime is 2000021010061. The next prime is 2000021010079. The reversal of 2000021010077 is 7700101200002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937870021476 + 62150988601 = 1392074^2 + 249301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000021010077 - 2⁴ = 2000021010061 is a prime.

Together with 2000021010079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000021010079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000010505038 + 1000010505039.

It is an arithmetic number, because the mean of its divisors is an integer number (1000010505039).

Almost surely, 2^{2000021010077} is an apocalyptic number.

It is an amenable number.

2000021010077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000021010077 is an equidigital number, since it uses as much as digits as its factorization.

2000021010077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 20.

Adding to 2000021010077 its reverse (7700101200002), we get a palindrome (9700122210079).

The spelling of 2000021010077 in words is "two trillion, twenty-one million, ten thousand, seventy-seven".