1321220230 has 32 divisors (see below), whose sum is σ = 2597622048. Its totient is φ = 479846400.

The previous prime is 1321220227. The next prime is 1321220249. The reversal of 1321220230 is 320221231.

It is a super-2 number, since 2×1321220230² = 3491245792322505800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86790 + ... + 100870.

It is an arithmetic number, because the mean of its divisors is an integer number (81175689).

Almost surely, 2^1321220230 is an apocalyptic number.

1321220230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321220230 is a deficient number, since it is larger than the sum of its proper divisors (1276401818).

1321220230 is a wasteful number, since it uses less digits than its factorization.

1321220230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14952.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1321220230 is about 36348.5932327511. The cubic root of 1321220230 is about 1097.2992228233.

Adding to 1321220230 its reverse (320221231), we get a palindrome (1641441461).

It can be divided in two parts, 13212 and 20230, that multiplied together give a triangular number (267278760 = T₂₃₁₂₀).

The spelling of 1321220230 in words is "one billion, three hundred twenty-one million, two hundred twenty thousand, two hundred thirty".