2123021031077 has 2 divisors, whose sum is σ = 2123021031078. Its totient is φ = 2123021031076.

The previous prime is 2123021031067. The next prime is 2123021031101. The reversal of 2123021031077 is 7701301203212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1693418126596 + 429602904481 = 1301314^2 + 655441^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123021031077 - 2⁸ = 2123021030821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123021031067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061510515538 + 1061510515539.

It is an arithmetic number, because the mean of its divisors is an integer number (1061510515539).

Almost surely, 2^{2123021031077} is an apocalyptic number.

It is an amenable number.

2123021031077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123021031077 is an equidigital number, since it uses as much as digits as its factorization.

2123021031077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

Adding to 2123021031077 its reverse (7701301203212), we get a palindrome (9824322234289).

The spelling of 2123021031077 in words is "two trillion, one hundred twenty-three billion, twenty-one million, thirty-one thousand, seventy-seven".