102101222120021 has 8 divisors (see below), whose sum is σ = 105116624178720. Its totient is φ = 99114954381072.

The previous prime is 102101222120003. The next prime is 102101222120057. The reversal of 102101222120021 is 120021222101201.

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

It is a cyclic number.

It is not a de Polignac number, because 102101222120021 - 2⁴⁶ = 31732477942357 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 (102101222120621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7283572826 + ... + 7283586843.

It is an arithmetic number, because the mean of its divisors is an integer number (13139578022340).

Almost surely, 2^{102101222120021} is an apocalyptic number.

It is an amenable number.

102101222120021 is a deficient number, since it is larger than the sum of its proper divisors (3015402058699).

102101222120021 is a wasteful number, since it uses less digits than its factorization.

102101222120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14567159875.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102101222120021 its reverse (120021222101201), we get a palindrome (222122444221222).

The spelling of 102101222120021 in words is "one hundred two trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty thousand, twenty-one".