3121222021311 has 8 divisors (see below), whose sum is σ = 4161646453120. Its totient is φ = 2080806135192.

The previous prime is 3121222021297. The next prime is 3121222021331. The reversal of 3121222021311 is 1131202221213.

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

It is not a de Polignac number, because 3121222021311 - 2¹⁵ = 3121221988543 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 (3121222021331) 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, 1229155 + ... + 2784468.

It is an arithmetic number, because the mean of its divisors is an integer number (520205806640).

Almost surely, 2^{3121222021311} is an apocalyptic number.

3121222021311 is a deficient number, since it is larger than the sum of its proper divisors (1040424431809).

3121222021311 is a wasteful number, since it uses less digits than its factorization.

3121222021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272845.

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

Adding to 3121222021311 its reverse (1131202221213), we get a palindrome (4252424242524).

The spelling of 3121222021311 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, three hundred eleven".