3121222031206 has 8 divisors (see below), whose sum is σ = 4686454800144. Its totient is φ = 1559070431160.

The previous prime is 3121222031153. The next prime is 3121222031219. The reversal of 3121222031206 is 6021302221213.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770289690 + ... + 770293741.

It is an arithmetic number, because the mean of its divisors is an integer number (585806850018).

Almost surely, 2^{3121222031206} is an apocalyptic number.

3121222031206 is a deficient number, since it is larger than the sum of its proper divisors (1565232768938).

3121222031206 is a wasteful number, since it uses less digits than its factorization.

3121222031206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540584446.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 3121222031206 its reverse (6021302221213), we get a palindrome (9142524252419).

The spelling of 3121222031206 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-two million, thirty-one thousand, two hundred six".