3112210101221 has 4 divisors (see below), whose sum is σ = 3351610878252. Its totient is φ = 2872809324192.

The previous prime is 3112210101199. The next prime is 3112210101251. The reversal of 3112210101221 is 1221010122113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 263240824900 + 2848969276321 = 513070^2 + 1687889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112210101221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3112210101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112210101251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119700388496 + ... + 119700388521.

It is an arithmetic number, because the mean of its divisors is an integer number (837902719563).

Almost surely, 2^{3112210101221} is an apocalyptic number.

It is an amenable number.

3112210101221 is a deficient number, since it is larger than the sum of its proper divisors (239400777031).

3112210101221 is a wasteful number, since it uses less digits than its factorization.

3112210101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239400777030.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 3112210101221 its reverse (1221010122113), we get a palindrome (4333220223334).

The spelling of 3112210101221 in words is "three trillion, one hundred twelve billion, two hundred ten million, one hundred one thousand, two hundred twenty-one".