102552514421621 has 12 divisors (see below), whose sum is σ = 112801346179200. Its totient is φ = 93164770666440.

The previous prime is 102552514421579. The next prime is 102552514421719. The reversal of 102552514421621 is 126124415255201.

It is not a de Polignac number, because 102552514421621 - 2¹⁸ = 102552514159477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102552514421821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294315611 + ... + 294663848.

It is an arithmetic number, because the mean of its divisors is an integer number (9400112181600).

Almost surely, 2^{102552514421621} is an apocalyptic number.

102552514421621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102552514421621 is a deficient number, since it is larger than the sum of its proper divisors (10248831757579).

102552514421621 is a wasteful number, since it uses less digits than its factorization.

102552514421621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588980920 (or 588980909 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

Adding to 102552514421621 its reverse (126124415255201), we get a palindrome (228676929676822).

The spelling of 102552514421621 in words is "one hundred two trillion, five hundred fifty-two billion, five hundred fourteen million, four hundred twenty-one thousand, six hundred twenty-one".