379212120212221 has 4 divisors (see below), whose sum is σ = 380839640041692. Its totient is φ = 377584600382752.

The previous prime is 379212120212203. The next prime is 379212120212249. The reversal of 379212120212221 is 122212021212973.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145182979656100 + 234029140556121 = 12049190^2 + 15298011^2 .

It is a cyclic number.

It is not a de Polignac number, because 379212120212221 - 2⁹ = 379212120211709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379212120212291) 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, 813759914386 + ... + 813759914851.

It is an arithmetic number, because the mean of its divisors is an integer number (95209910010423).

Almost surely, 2^{379212120212221} is an apocalyptic number.

It is an amenable number.

379212120212221 is a deficient number, since it is larger than the sum of its proper divisors (1627519829471).

379212120212221 is a wasteful number, since it uses less digits than its factorization.

379212120212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627519829470.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 379212120212221 in words is "three hundred seventy-nine trillion, two hundred twelve billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-one".