1213221023203 has 8 divisors (see below), whose sum is σ = 1386589766240. Its totient is φ = 1039865143680.

The previous prime is 1213221023029. The next prime is 1213221023207. The reversal of 1213221023203 is 3023201223121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213221023203 - 2¹³ = 1213221015011 is a prime.

It is a super-2 number, since 2×1213221023203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213221023207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3012918 + ... + 3391771.

It is an arithmetic number, because the mean of its divisors is an integer number (173323720780).

Almost surely, 2^{1213221023203} is an apocalyptic number.

1213221023203 is a deficient number, since it is larger than the sum of its proper divisors (173368743037).

1213221023203 is an equidigital number, since it uses as much as digits as its factorization.

1213221023203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6431757.

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

Adding to 1213221023203 its reverse (3023201223121), we get a palindrome (4236422246324).

The spelling of 1213221023203 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, twenty-three thousand, two hundred three".