31220103222111 has 8 divisors (see below), whose sum is σ = 41629798439680. Its totient is φ = 20811905076312.

The previous prime is 31220103222107. The next prime is 31220103222131. The reversal of 31220103222111 is 11122230102213.

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

It is not a de Polignac number, because 31220103222111 - 2² = 31220103222107 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 (31220103222131) 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, 374219281 + ... + 374302698.

It is an arithmetic number, because the mean of its divisors is an integer number (5203724804960).

Almost surely, 2^{31220103222111} is an apocalyptic number.

31220103222111 is a deficient number, since it is larger than the sum of its proper divisors (10409695217569).

31220103222111 is a wasteful number, since it uses less digits than its factorization.

31220103222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748535885.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31220103222111 its reverse (11122230102213), we get a palindrome (42342333324324).

The spelling of 31220103222111 in words is "thirty-one trillion, two hundred twenty billion, one hundred three million, two hundred twenty-two thousand, one hundred eleven".