221451023214102 has 16 divisors (see below), whose sum is σ = 483165868830912. Its totient is φ = 67106370670920.

The previous prime is 221451023214017. The next prime is 221451023214121. The reversal of 221451023214102 is 201412320154122.

It is a self number, because there is not a number n which added to its sum of digits gives 221451023214102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1677659266708 + ... + 1677659266839.

It is an arithmetic number, because the mean of its divisors is an integer number (30197866801932).

Almost surely, 2^{221451023214102} is an apocalyptic number.

221451023214102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221451023214102 is an abundant number, since it is smaller than the sum of its proper divisors (261714845616810).

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

221451023214102 is a wasteful number, since it uses less digits than its factorization.

221451023214102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355318533563.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 221451023214102 its reverse (201412320154122), we get a palindrome (422863343368224).

The spelling of 221451023214102 in words is "two hundred twenty-one trillion, four hundred fifty-one billion, twenty-three million, two hundred fourteen thousand, one hundred two".