221102212212123 has 8 divisors (see below), whose sum is σ = 321603217763136. Its totient is φ = 134001340734600.

The previous prime is 221102212212059. The next prime is 221102212212187. The reversal of 221102212212123 is 321212212201122.

It is an interprime number because it is at equal distance from previous prime (221102212212059) and next prime (221102212212187).

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

It is not a de Polignac number, because 221102212212123 - 2⁶ = 221102212212059 is a prime.

It is a super-3 number, since 3×221102212212123³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221102212212093 and 221102212212102.

It is not an unprimeable number, because it can be changed into a prime (221102212212023) 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, 3350033518333 + ... + 3350033518398.

It is an arithmetic number, because the mean of its divisors is an integer number (40200402220392).

Almost surely, 2^{221102212212123} is an apocalyptic number.

221102212212123 is a deficient number, since it is larger than the sum of its proper divisors (100501005551013).

221102212212123 is a wasteful number, since it uses less digits than its factorization.

221102212212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700067036745.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 221102212212123 its reverse (321212212201122), we get a palindrome (542314424413245).

The spelling of 221102212212123 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-three".