202011212121077 has 2 divisors, whose sum is σ = 202011212121078. Its totient is φ = 202011212121076.

The previous prime is 202011212121067. The next prime is 202011212121109. The reversal of 202011212121077 is 770121212110202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201996122701156 + 15089419921 = 14212534^2 + 122839^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011212121077 - 2³⁰ = 202010138379253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202011212121067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101005606060538 + 101005606060539.

It is an arithmetic number, because the mean of its divisors is an integer number (101005606060539).

Almost surely, 2^{202011212121077} is an apocalyptic number.

It is an amenable number.

202011212121077 is a deficient number, since it is larger than the sum of its proper divisors (1).

202011212121077 is an equidigital number, since it uses as much as digits as its factorization.

202011212121077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 29.

Adding to 202011212121077 its reverse (770121212110202), we get a palindrome (972132424231279).

The spelling of 202011212121077 in words is "two hundred two trillion, eleven billion, two hundred twelve million, one hundred twenty-one thousand, seventy-seven".