1212301203223 has 4 divisors (see below), whose sum is σ = 1322510403528. Its totient is φ = 1102092002920.

The previous prime is 1212301203221. The next prime is 1212301203227. The reversal of 1212301203223 is 3223021032121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212301203223 - 2¹ = 1212301203221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212301203194 and 1212301203203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212301203221) 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, 55104600136 + ... + 55104600157.

It is an arithmetic number, because the mean of its divisors is an integer number (330627600882).

Almost surely, 2^{1212301203223} is an apocalyptic number.

1212301203223 is a deficient number, since it is larger than the sum of its proper divisors (110209200305).

1212301203223 is a wasteful number, since it uses less digits than its factorization.

1212301203223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110209200304.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1212301203223 its reverse (3223021032121), we get a palindrome (4435322235344).

The spelling of 1212301203223 in words is "one trillion, two hundred twelve billion, three hundred one million, two hundred three thousand, two hundred twenty-three".