11011021202123 has 2 divisors, whose sum is σ = 11011021202124. Its totient is φ = 11011021202122.

The previous prime is 11011021202119. The next prime is 11011021202161. The reversal of 11011021202123 is 32120212011011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11011021202123 - 2² = 11011021202119 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011021202023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505510601061 + 5505510601062.

It is an arithmetic number, because the mean of its divisors is an integer number (5505510601062).

Almost surely, 2^{11011021202123} is an apocalyptic number.

11011021202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011021202123 is an equidigital number, since it uses as much as digits as its factorization.

11011021202123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11011021202123 its reverse (32120212011011), we get a palindrome (43131233213134).

The spelling of 11011021202123 in words is "eleven trillion, eleven billion, twenty-one million, two hundred two thousand, one hundred twenty-three".