355252311041221 has 16 divisors (see below), whose sum is σ = 391315417384320. Its totient is φ = 319817189214720.

The previous prime is 355252311041191. The next prime is 355252311041237. The reversal of 355252311041221 is 122140113252553.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 355252311041221 - 2¹⁵ = 355252311008453 is a prime.

It is a super-2 number, since 2×355252311041221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355250311041221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91698201 + ... + 95493793.

It is an arithmetic number, because the mean of its divisors is an integer number (24457213586520).

Almost surely, 2^{355252311041221} is an apocalyptic number.

It is an amenable number.

355252311041221 is a deficient number, since it is larger than the sum of its proper divisors (36063106343099).

355252311041221 is a wasteful number, since it uses less digits than its factorization.

355252311041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878316.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 355252311041221 its reverse (122140113252553), we get a palindrome (477392424293774).

The spelling of 355252311041221 in words is "three hundred fifty-five trillion, two hundred fifty-two billion, three hundred eleven million, forty-one thousand, two hundred twenty-one".