355121001 has 12 divisors (see below), whose sum is σ = 539950320. Its totient is φ = 224286840.

The previous prime is 355120999. The next prime is 355121021. The reversal of 355121001 is 100121553.

It is not a de Polignac number, because 355121001 - 2¹ = 355120999 is a prime.

It is a super-2 number, since 2×355121001² = 252221850702484002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (355121021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1038195 + ... + 1038536.

It is an arithmetic number, because the mean of its divisors is an integer number (44995860).

Almost surely, 2^355121001 is an apocalyptic number.

It is an amenable number.

355121001 is a deficient number, since it is larger than the sum of its proper divisors (184829319).

355121001 is a wasteful number, since it uses less digits than its factorization.

355121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076756 (or 2076753 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 355121001 is about 18844.6544409814. The cubic root of 355121001 is about 708.1503140104.

Adding to 355121001 its reverse (100121553), we get a palindrome (455242554).

The spelling of 355121001 in words is "three hundred fifty-five million, one hundred twenty-one thousand, one".