1213012122223 has 4 divisors (see below), whose sum is σ = 1323285951528. Its totient is φ = 1102738292920.

The previous prime is 1213012122181. The next prime is 1213012122229. The reversal of 1213012122223 is 3222212103121.

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

It is not a de Polignac number, because 1213012122223 - 2¹⁷ = 1213011991151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213012122194 and 1213012122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213012122229) 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, 55136914636 + ... + 55136914657.

It is an arithmetic number, because the mean of its divisors is an integer number (330821487882).

Almost surely, 2^{1213012122223} is an apocalyptic number.

1213012122223 is a deficient number, since it is larger than the sum of its proper divisors (110273829305).

1213012122223 is a wasteful number, since it uses less digits than its factorization.

1213012122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110273829304.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1213012122223 its reverse (3222212103121), we get a palindrome (4435224225344).

The spelling of 1213012122223 in words is "one trillion, two hundred thirteen billion, twelve million, one hundred twenty-two thousand, two hundred twenty-three".