101212221311 has 2 divisors, whose sum is σ = 101212221312. Its totient is φ = 101212221310.

The previous prime is 101212221281. The next prime is 101212221347. The reversal of 101212221311 is 113122212101.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (113122212101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101212221311 - 2²² = 101208027007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101212221311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101212220311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606110655 + 50606110656.

It is an arithmetic number, because the mean of its divisors is an integer number (50606110656).

Almost surely, 2^101212221311 is an apocalyptic number.

101212221311 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212221311 is an equidigital number, since it uses as much as digits as its factorization.

101212221311 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 101212221311 its reverse (113122212101), we get a palindrome (214334433412).

The spelling of 101212221311 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, three hundred eleven".