101121121111211 has 4 divisors (see below), whose sum is σ = 101121273264024. Its totient is φ = 101120968958400.

The previous prime is 101121121111189. The next prime is 101121121111237. The reversal of 101121121111211 is 112111121121101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101121121111211 - 2²⁶ = 101121054002347 is a prime.

It is a super-2 number, since 2×101121121111211² (a number of 29 digits) contains 22 as substring.

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 101121121111211.

It is not an unprimeable number, because it can be changed into a prime (101121121111271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75075110 + ... + 76410171.

It is an arithmetic number, because the mean of its divisors is an integer number (25280318316006).

Almost surely, 2^{101121121111211} is an apocalyptic number.

101121121111211 is a deficient number, since it is larger than the sum of its proper divisors (152152813).

101121121111211 is an equidigital number, since it uses as much as digits as its factorization.

101121121111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152152812.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 101121121111211 its reverse (112111121121101), we get a palindrome (213232242232312).

The spelling of 101121121111211 in words is "one hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred eleven".