3100212011221 has 16 divisors (see below), whose sum is σ = 3392998021504. Its totient is φ = 2815297176384.

The previous prime is 3100212011213. The next prime is 3100212011227. The reversal of 3100212011221 is 1221102120013.

It is a cyclic number.

It is not a de Polignac number, because 3100212011221 - 2³ = 3100212011213 is a prime.

It is a super-2 number, since 2×3100212011221² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3100212011195 and 3100212011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100212011227) 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, 1691625 + ... + 3010318.

It is an arithmetic number, because the mean of its divisors is an integer number (212062376344).

Almost surely, 2^{3100212011221} is an apocalyptic number.

It is an amenable number.

3100212011221 is a deficient number, since it is larger than the sum of its proper divisors (292786010283).

3100212011221 is a wasteful number, since it uses less digits than its factorization.

3100212011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702780.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 3100212011221 its reverse (1221102120013), we get a palindrome (4321314131234).

The spelling of 3100212011221 in words is "three trillion, one hundred billion, two hundred twelve million, eleven thousand, two hundred twenty-one".