102000221121 has 32 divisors (see below), whose sum is σ = 140198768640. Its totient is φ = 65915211456.

The previous prime is 102000221117. The next prime is 102000221123. The reversal of 102000221121 is 121122000201.

It is not a de Polignac number, because 102000221121 - 2² = 102000221117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102000221097 and 102000221106.

It is not an unprimeable number, because it can be changed into a prime (102000221123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39549010 + ... + 39551588.

It is an arithmetic number, because the mean of its divisors is an integer number (4381211520).

Almost surely, 2^102000221121 is an apocalyptic number.

It is an amenable number.

102000221121 is a deficient number, since it is larger than the sum of its proper divisors (38198547519).

102000221121 is a wasteful number, since it uses less digits than its factorization.

102000221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813.

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

Adding to 102000221121 its reverse (121122000201), we get a palindrome (223122221322).

The spelling of 102000221121 in words is "one hundred two billion, two hundred twenty-one thousand, one hundred twenty-one".