1213322010 has 64 divisors (see below), whose sum is σ = 3017710080. Its totient is φ = 311843840.

The previous prime is 1213322009. The next prime is 1213322021. The reversal of 1213322010 is 102233121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765679 + ... + 767261.

It is an arithmetic number, because the mean of its divisors is an integer number (47151720).

Almost surely, 2^1213322010 is an apocalyptic number.

1213322010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213322010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508855040).

1213322010 is an abundant number, since it is smaller than the sum of its proper divisors (1804388070).

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

1213322010 is a wasteful number, since it uses less digits than its factorization.

1213322010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1213322010 is about 34832.7720688434. The cubic root of 1213322010 is about 1066.5765361127.

Adding to 1213322010 its reverse (102233121), we get a palindrome (1315555131).

Subtracting from 1213322010 its reverse (102233121), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 12133 and 22010, that added together give a palindrome (34143).

The spelling of 1213322010 in words is "one billion, two hundred thirteen million, three hundred twenty-two thousand, ten".