352102021 has 4 divisors (see below), whose sum is σ = 364243500. Its totient is φ = 339960544.

The previous prime is 352102013. The next prime is 352102081. The reversal of 352102021 is 120201253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120201253 = 163 ⋅737431.

It can be written as a sum of positive squares in 2 ways, for example, as 59213025 + 292888996 = 7695^2 + 17114^2 .

It is a cyclic number.

It is not a de Polignac number, because 352102021 - 2³ = 352102013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 352101986 and 352102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352102081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6070696 + ... + 6070753.

It is an arithmetic number, because the mean of its divisors is an integer number (91060875).

Almost surely, 2^352102021 is an apocalyptic number.

It is an amenable number.

352102021 is a deficient number, since it is larger than the sum of its proper divisors (12141479).

352102021 is a wasteful number, since it uses less digits than its factorization.

352102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12141478.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 352102021 is about 18764.3817111036. The cubic root of 352102021 is about 706.1378744283.

Adding to 352102021 its reverse (120201253), we get a palindrome (472303274).

The spelling of 352102021 in words is "three hundred fifty-two million, one hundred two thousand, twenty-one".