1213323213102 has 128 divisors (see below), whose sum is σ = 3259818390528. Its totient is φ = 290758118400.

The previous prime is 1213323213083. The next prime is 1213323213103. The reversal of 1213323213102 is 2013123233121.

It is a super-2 number, since 2×1213323213102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213323213103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11943402 + ... + 12044562.

It is an arithmetic number, because the mean of its divisors is an integer number (25467331176).

Almost surely, 2^{1213323213102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213323213102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629909195264).

1213323213102 is an abundant number, since it is smaller than the sum of its proper divisors (2046495177426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213323213102 is a wasteful number, since it uses less digits than its factorization.

1213323213102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103194.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213323213102 its reverse (2013123233121), we get a palindrome (3226446446223).

The spelling of 1213323213102 in words is "one trillion, two hundred thirteen billion, three hundred twenty-three million, two hundred thirteen thousand, one hundred two".