354120022040121 has 6 divisors (see below), whose sum is σ = 511506698502410. Its totient is φ = 236080014693408.

The previous prime is 354120022040087. The next prime is 354120022040143. The reversal of 354120022040121 is 121040220021453.

354120022040121 is a `hidden beast` number, since 3 + 5 + 4 + 12 + 0 + 0 + 220 + 401 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 351668257952400 + 2451764087721 = 18752820^2 + 1565811^2 .

It is not a de Polignac number, because 354120022040121 - 2¹⁴ = 354120022023737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354120022040221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19673334557776 + ... + 19673334557793.

Almost surely, 2^{354120022040121} is an apocalyptic number.

It is an amenable number.

354120022040121 is a deficient number, since it is larger than the sum of its proper divisors (157386676462289).

354120022040121 is a wasteful number, since it uses less digits than its factorization.

354120022040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39346669115575 (or 39346669115572 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 354120022040121 its reverse (121040220021453), we get a palindrome (475160242061574).

The spelling of 354120022040121 in words is "three hundred fifty-four trillion, one hundred twenty billion, twenty-two million, forty thousand, one hundred twenty-one".