1220213324 has 24 divisors (see below), whose sum is σ = 2350122768. Its totient is φ = 549731840.

The previous prime is 1220213261. The next prime is 1220213339. The reversal of 1220213324 is 4233120221.

It is a junction number, because it is equal to n+sod(n) for n = 1220213296 and 1220213305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117737 + ... + 127680.

It is an arithmetic number, because the mean of its divisors is an integer number (97921782).

Almost surely, 2^1220213324 is an apocalyptic number.

It is an amenable number.

1220213324 is a deficient number, since it is larger than the sum of its proper divisors (1129909444).

1220213324 is a wasteful number, since it uses less digits than its factorization.

1220213324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245545 (or 245543 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1220213324 is about 34931.5519838441. The cubic root of 1220213324 is about 1068.5920060373.

Adding to 1220213324 its reverse (4233120221), we get a palindrome (5453333545).

The spelling of 1220213324 in words is "one billion, two hundred twenty million, two hundred thirteen thousand, three hundred twenty-four".