221313214122 has 64 divisors (see below), whose sum is σ = 594295640064. Its totient is φ = 53062107840.

The previous prime is 221313214099. The next prime is 221313214123. The reversal of 221313214122 is 221412313122.

It is a junction number, because it is equal to n+sod(n) for n = 221313214092 and 221313214101.

It is not an unprimeable number, because it can be changed into a prime (221313214123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18418338 + ... + 18430349.

It is an arithmetic number, because the mean of its divisors is an integer number (9285869376).

Almost surely, 2^221313214122 is an apocalyptic number.

221313214122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221313214122 is an abundant number, since it is smaller than the sum of its proper divisors (372982425942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221313214122 is a wasteful number, since it uses less digits than its factorization.

221313214122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36848723.

The product of its digits is 1152, while the sum is 24.

Adding to 221313214122 its reverse (221412313122), we get a palindrome (442725527244).

The spelling of 221313214122 in words is "two hundred twenty-one billion, three hundred thirteen million, two hundred fourteen thousand, one hundred twenty-two".