222121001011101 has 4 divisors (see below), whose sum is σ = 296161334681472. Its totient is φ = 148080667340732.

The previous prime is 222121001011073. The next prime is 222121001011109. The reversal of 222121001011101 is 101110100121222.

It is a happy number.

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 222121001011101 - 2⁶ = 222121001011037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121001011109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37020166835181 + ... + 37020166835186.

It is an arithmetic number, because the mean of its divisors is an integer number (74040333670368).

Almost surely, 2^{222121001011101} is an apocalyptic number.

It is an amenable number.

222121001011101 is a deficient number, since it is larger than the sum of its proper divisors (74040333670371).

222121001011101 is an equidigital number, since it uses as much as digits as its factorization.

222121001011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74040333670370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 222121001011101 its reverse (101110100121222), we get a palindrome (323231101132323).

The spelling of 222121001011101 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one million, eleven thousand, one hundred one".