31321221102111 has 8 divisors (see below), whose sum is σ = 41780550495744. Its totient is φ = 20871352888280.

The previous prime is 31321221102103. The next prime is 31321221102133. The reversal of 31321221102111 is 11120112212313.

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

It is a cyclic number.

It is not a de Polignac number, because 31321221102111 - 2³ = 31321221102103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321221102811) 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, 2365287225 + ... + 2365300466.

It is an arithmetic number, because the mean of its divisors is an integer number (5222568811968).

Almost surely, 2^{31321221102111} is an apocalyptic number.

31321221102111 is a deficient number, since it is larger than the sum of its proper divisors (10459329393633).

31321221102111 is a wasteful number, since it uses less digits than its factorization.

31321221102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730589901.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 31321221102111 its reverse (11120112212313), we get a palindrome (42441333314424).

The spelling of 31321221102111 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-one million, one hundred two thousand, one hundred eleven".