3210221142 has 24 divisors (see below), whose sum is σ = 6980600016. Its totient is φ = 1066208976.

The previous prime is 3210221141. The next prime is 3210221167. The reversal of 3210221142 is 2411220123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3210221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316938 + ... + 326909.

It is an arithmetic number, because the mean of its divisors is an integer number (290858334).

Almost surely, 2^3210221142 is an apocalyptic number.

3210221142 is an abundant number, since it is smaller than the sum of its proper divisors (3770378874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3210221142 is a wasteful number, since it uses less digits than its factorization.

3210221142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644132 (or 644129 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3210221142 is about 56658.8134538661. The cubic root of 3210221142 is about 1475.1798906519.

Adding to 3210221142 its reverse (2411220123), we get a palindrome (5621441265).

The spelling of 3210221142 in words is "three billion, two hundred ten million, two hundred twenty-one thousand, one hundred forty-two".