102210121 has 8 divisors (see below), whose sum is σ = 111466880. Its totient is φ = 93152592.

The previous prime is 102210107. The next prime is 102210127. The reversal of 102210121 is 121012201.

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

It is not a de Polignac number, because 102210121 - 2¹⁷ = 102079049 is a prime.

It is a super-3 number, since 3×102210121³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102210098 and 102210107.

It is not an unprimeable number, because it can be changed into a prime (102210127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48735 + ... + 50788.

It is an arithmetic number, because the mean of its divisors is an integer number (13933360).

Almost surely, 2^102210121 is an apocalyptic number.

It is an amenable number.

102210121 is a deficient number, since it is larger than the sum of its proper divisors (9256759).

102210121 is an equidigital number, since it uses as much as digits as its factorization.

102210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99615.

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

The square root of 102210121 is about 10109.9021261336. The cubic root of 102210121 is about 467.5534875460.

Adding to 102210121 its reverse (121012201), we get a palindrome (223222322).

The spelling of 102210121 in words is "one hundred two million, two hundred ten thousand, one hundred twenty-one".