102210000121 has 6 divisors (see below), whose sum is σ = 104642257290. Its totient is φ = 99833021568.

The previous prime is 102210000119. The next prime is 102210000187. The reversal of 102210000121 is 121000012201.

It can be written as a sum of positive squares in only one way, i.e., 80176754025 + 22033246096 = 283155^2 + 148436^2 .

It is not a de Polignac number, because 102210000121 - 2¹ = 102210000119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102210000098 and 102210000107.

It is not an unprimeable number, because it can be changed into a prime (102210000821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27637416 + ... + 27641113.

It is an arithmetic number, because the mean of its divisors is an integer number (17440376215).

Almost surely, 2^102210000121 is an apocalyptic number.

It is an amenable number.

102210000121 is a deficient number, since it is larger than the sum of its proper divisors (2432257169).

102210000121 is an frugal number, since it uses more digits than its factorization.

102210000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55278615 (or 55278572 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102210000121 its reverse (121000012201), we get a palindrome (223210012322).

The spelling of 102210000121 in words is "one hundred two billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.