3106221356261 has 4 divisors (see below), whose sum is σ = 3106281597792. Its totient is φ = 3106161114732.

The previous prime is 3106221356233. The next prime is 3106221356269. The reversal of 3106221356261 is 1626531226013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3106221356261 is a prime.

It is a super-2 number, since 2×3106221356261² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3106221356269) 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, 30043355 + ... + 30146568.

It is an arithmetic number, because the mean of its divisors is an integer number (776570399448).

Almost surely, 2^{3106221356261} is an apocalyptic number.

It is an amenable number.

3106221356261 is a deficient number, since it is larger than the sum of its proper divisors (60241531).

3106221356261 is an equidigital number, since it uses as much as digits as its factorization.

3106221356261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60241530.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 3106221356261 in words is "three trillion, one hundred six billion, two hundred twenty-one million, three hundred fifty-six thousand, two hundred sixty-one".