391001220102101 has 8 divisors (see below), whose sum is σ = 447522517260864. Its totient is φ = 334645917943680.

The previous prime is 391001220102043. The next prime is 391001220102167. The reversal of 391001220102101 is 101201022100193.

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

It is not a de Polignac number, because 391001220102101 - 2²⁶ = 391001152993237 is a prime.

It is a super-2 number, since 2×391001220102101² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391001220102301) 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, 41498745035 + ... + 41498754456.

It is an arithmetic number, because the mean of its divisors is an integer number (55940314657608).

Almost surely, 2^{391001220102101} is an apocalyptic number.

It is an amenable number.

391001220102101 is a deficient number, since it is larger than the sum of its proper divisors (56521297158763).

391001220102101 is an equidigital number, since it uses as much as digits as its factorization.

391001220102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82997500171.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 391001220102101 its reverse (101201022100193), we get a palindrome (492202242202294).

The spelling of 391001220102101 in words is "three hundred ninety-one trillion, one billion, two hundred twenty million, one hundred two thousand, one hundred one".