11221111212101 has 8 divisors (see below), whose sum is σ = 12835153873344. Its totient is φ = 9609825244320.

The previous prime is 11221111212097. The next prime is 11221111212193. The reversal of 11221111212101 is 10121211112211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11221111212101 - 2² = 11221111212097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221111212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221111212301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689164640 + ... + 689180921.

It is an arithmetic number, because the mean of its divisors is an integer number (1604394234168).

Almost surely, 2^{11221111212101} is an apocalyptic number.

It is an amenable number.

11221111212101 is a deficient number, since it is larger than the sum of its proper divisors (1614042661243).

11221111212101 is a wasteful number, since it uses less digits than its factorization.

11221111212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378346731.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11221111212101 its reverse (10121211112211), we get a palindrome (21342322324312).

The spelling of 11221111212101 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, two hundred twelve thousand, one hundred one".