3121222561026 has 8 divisors (see below), whose sum is σ = 6242445122064. Its totient is φ = 1040407520340.

The previous prime is 3121222560983. The next prime is 3121222561069. The reversal of 3121222561026 is 6201652221213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3121222560983) and next prime (3121222561069).

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

3121222561026 is an admirable 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, 260101880080 + ... + 260101880091.

It is an arithmetic number, because the mean of its divisors is an integer number (780305640258).

Almost surely, 2^{3121222561026} is an apocalyptic number.

3121222561026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121222561026 is a wasteful number, since it uses less digits than its factorization.

3121222561026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520203760176.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 3121222561026 its reverse (6201652221213), we get a palindrome (9322874782239).

The spelling of 3121222561026 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-two million, five hundred sixty-one thousand, twenty-six".