321211142 has 8 divisors (see below), whose sum is σ = 550647696. Its totient is φ = 137661912.

The previous prime is 321211117. The next prime is 321211147. The reversal of 321211142 is 241112123.

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

It is a self number, because there is not a number n which added to its sum of digits gives 321211142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321211147) 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, 11471813 + ... + 11471840.

It is an arithmetic number, because the mean of its divisors is an integer number (68830962).

Almost surely, 2^321211142 is an apocalyptic number.

321211142 is a deficient number, since it is larger than the sum of its proper divisors (229436554).

321211142 is a wasteful number, since it uses less digits than its factorization.

321211142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22943662.

The product of its digits is 96, while the sum is 17.

The square root of 321211142 is about 17922.3642971568. The cubic root of 321211142 is about 684.8522188172.

Adding to 321211142 its reverse (241112123), we get a palindrome (562323265).

The spelling of 321211142 in words is "three hundred twenty-one million, two hundred eleven thousand, one hundred forty-two".