357213021007220 has 48 divisors (see below), whose sum is σ = 861155695561728. Its totient is φ = 121923829324800.

The previous prime is 357213021007169. The next prime is 357213021007237. The reversal of 357213021007220 is 22700120312753.

It is a super-2 number, since 2×357213021007220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5720869181 + ... + 5720931620.

It is an arithmetic number, because the mean of its divisors is an integer number (17940743657536).

Almost surely, 2^{357213021007220} is an apocalyptic number.

It is an amenable number.

357213021007220 is an abundant number, since it is smaller than the sum of its proper divisors (503942674554508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

357213021007220 is a wasteful number, since it uses less digits than its factorization.

357213021007220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11441801040 (or 11441801038 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

Adding to 357213021007220 its reverse (22700120312753), we get a palindrome (379913141319973).

The spelling of 357213021007220 in words is "three hundred fifty-seven trillion, two hundred thirteen billion, twenty-one million, seven thousand, two hundred twenty".