6211220365 has 16 divisors (see below), whose sum is σ = 8966574720. Its totient is φ = 4034957760.

The previous prime is 6211220333. The next prime is 6211220387. The reversal of 6211220365 is 5630221126.

It is not a de Polignac number, because 6211220365 - 2⁵ = 6211220333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4669426 + ... + 4670755.

It is an arithmetic number, because the mean of its divisors is an integer number (560410920).

Almost surely, 2^6211220365 is an apocalyptic number.

It is an amenable number.

6211220365 is a deficient number, since it is larger than the sum of its proper divisors (2755354355).

6211220365 is a wasteful number, since it uses less digits than its factorization.

6211220365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340212.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6211220365 is about 78811.2959226024. The cubic root of 6211220365 is about 1838.1980986380.

It can be divided in two parts, 6211 and 220365, that added together give a square (226576 = 476²).

The spelling of 6211220365 in words is "six billion, two hundred eleven million, two hundred twenty thousand, three hundred sixty-five".