201211212030077 has 2 divisors, whose sum is σ = 201211212030078. Its totient is φ = 201211212030076.

The previous prime is 201211212029987. The next prime is 201211212030139. The reversal of 201211212030077 is 770030212112102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200567512298596 + 643699731481 = 14162186^2 + 802309^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211212030077 - 2²² = 201211207835773 is a prime.

It is a super-2 number, since 2×201211212030077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201211212035077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605606015038 + 100605606015039.

It is an arithmetic number, because the mean of its divisors is an integer number (100605606015039).

Almost surely, 2^{201211212030077} is an apocalyptic number.

It is an amenable number.

201211212030077 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211212030077 is an equidigital number, since it uses as much as digits as its factorization.

201211212030077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 29.

Adding to 201211212030077 its reverse (770030212112102), we get a palindrome (971241424142179).

The spelling of 201211212030077 in words is "two hundred one trillion, two hundred eleven billion, two hundred twelve million, thirty thousand, seventy-seven".