31212221122003 has 16 divisors (see below), whose sum is σ = 32661271872000. Its totient is φ = 29770843354560.

The previous prime is 31212221121971. The next prime is 31212221122007. The reversal of 31212221122003 is 30022112221213.

It is a cyclic number.

It is not a de Polignac number, because 31212221122003 - 2⁵ = 31212221121971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212221122007) 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, 272184223 + ... + 272298871.

It is an arithmetic number, because the mean of its divisors is an integer number (2041329492000).

Almost surely, 2^{31212221122003} is an apocalyptic number.

31212221122003 is a deficient number, since it is larger than the sum of its proper divisors (1449050749997).

31212221122003 is a wasteful number, since it uses less digits than its factorization.

31212221122003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148002.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31212221122003 its reverse (30022112221213), we get a palindrome (61234333343216).

The spelling of 31212221122003 in words is "thirty-one trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, three".