101100121111221 has 4 divisors (see below), whose sum is σ = 134800161481632. Its totient is φ = 67400080740812.

The previous prime is 101100121111217. The next prime is 101100121111247. The reversal of 101100121111221 is 122111121001101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101100121111221 - 2² = 101100121111217 is a prime.

It is a super-2 number, since 2×101100121111221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101100121111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100121111261) 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, 16850020185201 + ... + 16850020185206.

It is an arithmetic number, because the mean of its divisors is an integer number (33700040370408).

Almost surely, 2^{101100121111221} is an apocalyptic number.

It is an amenable number.

101100121111221 is a deficient number, since it is larger than the sum of its proper divisors (33700040370411).

101100121111221 is an equidigital number, since it uses as much as digits as its factorization.

101100121111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33700040370410.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101100121111221 its reverse (122111121001101), we get a palindrome (223211242112322).

The spelling of 101100121111221 in words is "one hundred one trillion, one hundred billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twenty-one".