102102103102021 has 12 divisors (see below), whose sum is σ = 113084633293632. Its totient is φ = 92111543381000.

The previous prime is 102102103101983. The next prime is 102102103102049. The reversal of 102102103102021 is 120201301201201.

It is not a de Polignac number, because 102102103102021 - 2¹³ = 102102103093829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102102103101986 and 102102103102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102103102921) 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, 3220667485 + ... + 3220699186.

It is an arithmetic number, because the mean of its divisors is an integer number (9423719441136).

Almost surely, 2^{102102103102021} is an apocalyptic number.

102102103102021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102102103102021 is a deficient number, since it is larger than the sum of its proper divisors (10982530191611).

102102103102021 is a wasteful number, since it uses less digits than its factorization.

102102103102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6441366824 (or 6441366813 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102102103102021 its reverse (120201301201201), we get a palindrome (222303404303222).

The spelling of 102102103102021 in words is "one hundred two trillion, one hundred two billion, one hundred three million, one hundred two thousand, twenty-one".