101121222201111 has 56 divisors (see below), whose sum is σ = 173518586096544. Its totient is φ = 57701123323200.

The previous prime is 101121222201073. The next prime is 101121222201119. The reversal of 101121222201111 is 111102222121101.

It is a happy number.

101121222201111 is a `hidden beast` number, since 10 + 1 + 121 + 222 + 201 + 111 = 666.

It is not a de Polignac number, because 101121222201111 - 2¹⁴ = 101121222184727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121222201119) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 10556916 + ... + 17711321.

Almost surely, 2^{101121222201111} is an apocalyptic number.

101121222201111 is a deficient number, since it is larger than the sum of its proper divisors (72397363895433).

101121222201111 is an frugal number, since it uses more digits than its factorization.

101121222201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28268963 (or 28268948 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 101121222201111 its reverse (111102222121101), we get a palindrome (212223444322212).

The spelling of 101121222201111 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred eleven".