11101212021131 has 2 divisors, whose sum is σ = 11101212021132. Its totient is φ = 11101212021130.

The previous prime is 11101212021113. The next prime is 11101212021143. The reversal of 11101212021131 is 13112021210111.

Together with previous prime (11101212021113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101212021131 is a prime.

It is a super-2 number, since 2×11101212021131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11101212021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550606010565 + 5550606010566.

It is an arithmetic number, because the mean of its divisors is an integer number (5550606010566).

Almost surely, 2^{11101212021131} is an apocalyptic number.

11101212021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101212021131 is an equidigital number, since it uses as much as digits as its factorization.

11101212021131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11101212021131 its reverse (13112021210111), we get a palindrome (24213233231242).

The spelling of 11101212021131 in words is "eleven trillion, one hundred one billion, two hundred twelve million, twenty-one thousand, one hundred thirty-one".