6211221142 has 8 divisors (see below), whose sum is σ = 10647807696. Its totient is φ = 2661951912.

The previous prime is 6211221097. The next prime is 6211221143. The reversal of 6211221142 is 2411221126.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6211221143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 221829313 + ... + 221829340.

It is an arithmetic number, because the mean of its divisors is an integer number (1330975962).

Almost surely, 2^6211221142 is an apocalyptic number.

6211221142 is a deficient number, since it is larger than the sum of its proper divisors (4436586554).

6211221142 is a wasteful number, since it uses less digits than its factorization.

6211221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443658662.

The product of its digits is 384, while the sum is 22.

The square root of 6211221142 is about 78811.3008520986. The cubic root of 6211221142 is about 1838.1981752885.

Adding to 6211221142 its reverse (2411221126), we get a palindrome (8622442268).

The spelling of 6211221142 in words is "six billion, two hundred eleven million, two hundred twenty-one thousand, one hundred forty-two".