1020212111077 has 2 divisors, whose sum is σ = 1020212111078. Its totient is φ = 1020212111076.

The previous prime is 1020212111027. The next prime is 1020212111173. The reversal of 1020212111077 is 7701112120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734707836801 + 285504274276 = 857151^2 + 534326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020212111077 - 2¹¹ = 1020212109029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020212111027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510106055538 + 510106055539.

It is an arithmetic number, because the mean of its divisors is an integer number (510106055539).

Almost surely, 2^{1020212111077} is an apocalyptic number.

It is an amenable number.

1020212111077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020212111077 is an equidigital number, since it uses as much as digits as its factorization.

1020212111077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 25.

Adding to 1020212111077 its reverse (7701112120201), we get a palindrome (8721324231278).

The spelling of 1020212111077 in words is "one trillion, twenty billion, two hundred twelve million, one hundred eleven thousand, seventy-seven".