102121355 has 8 divisors (see below), whose sum is σ = 140052192. Its totient is φ = 70026048.

The previous prime is 102121343. The next prime is 102121361. The reversal of 102121355 is 553121201.

It is a happy number.

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 102121355 - 2⁴ = 102121339 is a prime.

It is a super-2 number, since 2×102121355² = 20857542294072050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458842 + ... + 1458911.

It is an arithmetic number, because the mean of its divisors is an integer number (17506524).

Almost surely, 2^102121355 is an apocalyptic number.

102121355 is a deficient number, since it is larger than the sum of its proper divisors (37930837).

102121355 is an equidigital number, since it uses as much as digits as its factorization.

102121355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917765.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 102121355 is about 10105.5111201760. The cubic root of 102121355 is about 467.4180969314.

Adding to 102121355 its reverse (553121201), we get a palindrome (655242556).

The spelling of 102121355 in words is "one hundred two million, one hundred twenty-one thousand, three hundred fifty-five".