102570021357 has 8 divisors (see below), whose sum is σ = 137447265600. Its totient is φ = 68036395680.

The previous prime is 102570021263. The next prime is 102570021361. The reversal of 102570021357 is 753120075201.

It is a happy number.

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

It is not a de Polignac number, because 102570021357 - 2¹¹ = 102570019309 is a prime.

It is a super-2 number, since 2×102570021357² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102570021157) 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, 85903944 + ... + 85905137.

It is an arithmetic number, because the mean of its divisors is an integer number (17180908200).

Almost surely, 2^102570021357 is an apocalyptic number.

It is an amenable number.

102570021357 is a deficient number, since it is larger than the sum of its proper divisors (34877244243).

102570021357 is a wasteful number, since it uses less digits than its factorization.

102570021357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171809283.

The product of its (nonzero) digits is 14700, while the sum is 33.

Adding to 102570021357 its reverse (753120075201), we get a palindrome (855690096558).

The spelling of 102570021357 in words is "one hundred two billion, five hundred seventy million, twenty-one thousand, three hundred fifty-seven".