11020212011957 has 2 divisors, whose sum is σ = 11020212011958. Its totient is φ = 11020212011956.

The previous prime is 11020212011933. The next prime is 11020212012079. The reversal of 11020212011957 is 75911021202011.

11020212011957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10057784302801 + 962427709156 = 3171401^2 + 981034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020212011957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11020212011927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510106005978 + 5510106005979.

It is an arithmetic number, because the mean of its divisors is an integer number (5510106005979).

Almost surely, 2^{11020212011957} is an apocalyptic number.

It is an amenable number.

11020212011957 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020212011957 is an equidigital number, since it uses as much as digits as its factorization.

11020212011957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

Adding to 11020212011957 its reverse (75911021202011), we get a palindrome (86931233213968).

The spelling of 11020212011957 in words is "eleven trillion, twenty billion, two hundred twelve million, eleven thousand, nine hundred fifty-seven".