392222121 has 4 divisors (see below), whose sum is σ = 522962832. Its totient is φ = 261481412.

The previous prime is 392222069. The next prime is 392222141. The reversal of 392222121 is 121222293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 392222121 - 2¹³ = 392213929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 392222091 and 392222100.

It is not an unprimeable number, because it can be changed into a prime (392222141) 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, 65370351 + ... + 65370356.

It is an arithmetic number, because the mean of its divisors is an integer number (130740708).

Almost surely, 2^392222121 is an apocalyptic number.

It is an amenable number.

392222121 is a deficient number, since it is larger than the sum of its proper divisors (130740711).

392222121 is a wasteful number, since it uses less digits than its factorization.

392222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130740710.

The product of its digits is 864, while the sum is 24.

The square root of 392222121 is about 19804.5984811609. The cubic root of 392222121 is about 731.9993486661. Note that the first 3 decimals are identical.

The spelling of 392222121 in words is "three hundred ninety-two million, two hundred twenty-two thousand, one hundred twenty-one".