101212111097 has 2 divisors, whose sum is σ = 101212111098. Its totient is φ = 101212111096.

The previous prime is 101212111093. The next prime is 101212111103. The reversal of 101212111097 is 790111212101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54424690681 + 46787420416 = 233291^2 + 216304^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212111097 - 2² = 101212111093 is a prime.

It is a super-2 number, since 2×101212111097² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101212111093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606055548 + 50606055549.

It is an arithmetic number, because the mean of its divisors is an integer number (50606055549).

Almost surely, 2^101212111097 is an apocalyptic number.

It is an amenable number.

101212111097 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212111097 is an equidigital number, since it uses as much as digits as its factorization.

101212111097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 26.

Adding to 101212111097 its reverse (790111212101), we get a palindrome (891323323198).

The spelling of 101212111097 in words is "one hundred one billion, two hundred twelve million, one hundred eleven thousand, ninety-seven".