31102222220011 has 4 divisors (see below), whose sum is σ = 31106365323592. Its totient is φ = 31098079116432.

The previous prime is 31102222219951. The next prime is 31102222220021. The reversal of 31102222220011 is 11002222220113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31102222220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31102222220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071540530 + ... + 2071555543.

It is an arithmetic number, because the mean of its divisors is an integer number (7776591330898).

Almost surely, 2^{31102222220011} is an apocalyptic number.

31102222220011 is a deficient number, since it is larger than the sum of its proper divisors (4143103581).

31102222220011 is an equidigital number, since it uses as much as digits as its factorization.

31102222220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143103580.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31102222220011 its reverse (11002222220113), we get a palindrome (42104444440124).

The spelling of 31102222220011 in words is "thirty-one trillion, one hundred two billion, two hundred twenty-two million, two hundred twenty thousand, eleven".