391002012101 has 8 divisors (see below), whose sum is σ = 392904474144. Its totient is φ = 389103414480.

The previous prime is 391002012059. The next prime is 391002012133. The reversal of 391002012101 is 101210200193.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-391002012101 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 (391002014101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763151 + ... + 1168076.

It is an arithmetic number, because the mean of its divisors is an integer number (49113059268).

Almost surely, 2^391002012101 is an apocalyptic number.

It is an amenable number.

391002012101 is a deficient number, since it is larger than the sum of its proper divisors (1902462043).

391002012101 is a wasteful number, since it uses less digits than its factorization.

391002012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932211.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 391002012101 its reverse (101210200193), we get a palindrome (492212212294).

The spelling of 391002012101 in words is "three hundred ninety-one billion, two million, twelve thousand, one hundred one".