102121357 has 8 divisors (see below), whose sum is σ = 114758784. Its totient is φ = 90167088.

The previous prime is 102121343. The next prime is 102121361. The reversal of 102121357 is 753121201.

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 102121357 - 2¹¹ = 102119309 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 (102121367) 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, 170473 + ... + 171070.

It is an arithmetic number, because the mean of its divisors is an integer number (14344848).

Almost surely, 2^102121357 is an apocalyptic number.

It is an amenable number.

102121357 is a deficient number, since it is larger than the sum of its proper divisors (12637427).

102121357 is a wasteful number, since it uses less digits than its factorization.

102121357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341579.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 102121357 is about 10105.5112191319. The cubic root of 102121357 is about 467.4180999828.

Adding to 102121357 its reverse (753121201), we get a palindrome (855242558).

The spelling of 102121357 in words is "one hundred two million, one hundred twenty-one thousand, three hundred fifty-seven".