321212111003 has 16 divisors (see below), whose sum is σ = 388714120704. Its totient is φ = 259115448960.

The previous prime is 321212110997. The next prime is 321212111029. The reversal of 321212111003 is 300111212123.

It is a cyclic number.

It is not a de Polignac number, because 321212111003 - 2²² = 321207916699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (321212111203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2625668 + ... + 2745278.

It is an arithmetic number, because the mean of its divisors is an integer number (24294632544).

Almost surely, 2^321212111003 is an apocalyptic number.

321212111003 is a deficient number, since it is larger than the sum of its proper divisors (67502009701).

321212111003 is a wasteful number, since it uses less digits than its factorization.

321212111003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142202.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321212111003 its reverse (300111212123), we get a palindrome (621323323126).

The spelling of 321212111003 in words is "three hundred twenty-one billion, two hundred twelve million, one hundred eleven thousand, three".