354500023205221 has 2 divisors, whose sum is σ = 354500023205222. Its totient is φ = 354500023205220.

The previous prime is 354500023205171. The next prime is 354500023205257. The reversal of 354500023205221 is 122502320005453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333027095940900 + 21472927264321 = 18249030^2 + 4633889^2 .

It is a cyclic number.

It is not a de Polignac number, because 354500023205221 - 2¹⁹ = 354500022680933 is a prime.

It is a super-3 number, since 3×354500023205221³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354500023205281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177250011602610 + 177250011602611.

It is an arithmetic number, because the mean of its divisors is an integer number (177250011602611).

Almost surely, 2^{354500023205221} is an apocalyptic number.

It is an amenable number.

354500023205221 is a deficient number, since it is larger than the sum of its proper divisors (1).

354500023205221 is an equidigital number, since it uses as much as digits as its factorization.

354500023205221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 354500023205221 in words is "three hundred fifty-four trillion, five hundred billion, twenty-three million, two hundred five thousand, two hundred twenty-one".