221321102103102 has 64 divisors (see below), whose sum is σ = 493923019898880. Its totient is φ = 65702890238976.

The previous prime is 221321102103097. The next prime is 221321102103107. The reversal of 221321102103102 is 201301201123122.

It is an interprime number because it is at equal distance from previous prime (221321102103097) and next prime (221321102103107).

It is a super-2 number, since 2×221321102103102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221321102103107) 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, 64967358 + ... + 68289089.

It is an arithmetic number, because the mean of its divisors is an integer number (7717547185920).

Almost surely, 2^{221321102103102} is an apocalyptic number.

221321102103102 is an abundant number, since it is smaller than the sum of its proper divisors (272601917795778).

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

221321102103102 is a wasteful number, since it uses less digits than its factorization.

221321102103102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133257345.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221321102103102 its reverse (201301201123122), we get a palindrome (422622303226224).

The spelling of 221321102103102 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, one hundred two million, one hundred three thousand, one hundred two".