391120121021222 has 8 divisors (see below), whose sum is σ = 587904983582400. Its totient is φ = 195151793160424.

The previous prime is 391120121021221. The next prime is 391120121021239. The reversal of 391120121021222 is 222120121021193.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×391120121021222³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391120121021221) 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, 204133673897 + ... + 204133675812.

It is an arithmetic number, because the mean of its divisors is an integer number (73488122947800).

Almost surely, 2^{391120121021222} is an apocalyptic number.

391120121021222 is a deficient number, since it is larger than the sum of its proper divisors (196784862561178).

391120121021222 is a wasteful number, since it uses less digits than its factorization.

391120121021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408267350190.

The product of its (nonzero) digits is 1728, while the sum is 29.

Subtracting from 391120121021222 its sum of digits (29), we obtain a palindrome (391120121021193).

The spelling of 391120121021222 in words is "three hundred ninety-one trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-two".