102100122021 has 8 divisors (see below), whose sum is σ = 136178156800. Its totient is φ = 68044417632.

The previous prime is 102100122011. The next prime is 102100122029. The reversal of 102100122021 is 120221001201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102100122021 - 2¹⁴ = 102100105637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102100121988 and 102100122006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100122029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5571925 + ... + 5590218.

It is an arithmetic number, because the mean of its divisors is an integer number (17022269600).

Almost surely, 2^102100122021 is an apocalyptic number.

It is an amenable number.

102100122021 is a deficient number, since it is larger than the sum of its proper divisors (34078034779).

102100122021 is a wasteful number, since it uses less digits than its factorization.

102100122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11165195.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102100122021 its reverse (120221001201), we get a palindrome (222321123222).

The spelling of 102100122021 in words is "one hundred two billion, one hundred million, one hundred twenty-two thousand, twenty-one".