31033223221121 has 16 divisors (see below), whose sum is σ = 34769876916480. Its totient is φ = 27449165278080.

The previous prime is 31033223221111. The next prime is 31033223221139. The reversal of 31033223221121 is 12112232233013.

It is not a de Polignac number, because 31033223221121 - 2¹⁸ = 31033222958977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31033223221111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32417480 + ... + 33361046.

It is an arithmetic number, because the mean of its divisors is an integer number (2173117307280).

Almost surely, 2^{31033223221121} is an apocalyptic number.

It is an amenable number.

31033223221121 is a deficient number, since it is larger than the sum of its proper divisors (3736653695359).

31033223221121 is a wasteful number, since it uses less digits than its factorization.

31033223221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024424.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31033223221121 its reverse (12112232233013), we get a palindrome (43145455454134).

The spelling of 31033223221121 in words is "thirty-one trillion, thirty-three billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-one".