221102102122 has 32 divisors (see below), whose sum is σ = 375845702400. Its totient is φ = 96629332800.

The previous prime is 221102102057. The next prime is 221102102141. The reversal of 221102102122 is 221201201122.

It is a happy number.

It is a super-2 number, since 2×221102102122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221102102096 and 221102102105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572529 + ... + 877492.

It is an arithmetic number, because the mean of its divisors is an integer number (11745178200).

Almost surely, 2^221102102122 is an apocalyptic number.

221102102122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221102102122 is a deficient number, since it is larger than the sum of its proper divisors (154743600278).

221102102122 is a wasteful number, since it uses less digits than its factorization.

221102102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450302.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221102102122 its reverse (221201201122), we get a palindrome (442303303244).

The spelling of 221102102122 in words is "two hundred twenty-one billion, one hundred two million, one hundred two thousand, one hundred twenty-two".