1201233220 has 48 divisors (see below), whose sum is σ = 2756976768. Its totient is φ = 436008960.

The previous prime is 1201233217. The next prime is 1201233223. The reversal of 1201233220 is 223321021.

It is an interprime number because it is at equal distance from previous prime (1201233217) and next prime (1201233223).

It is a super-2 number, since 2×1201233220² = 2885922497663136800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201233194 and 1201233203.

It is not an unprimeable number, because it can be changed into a prime (1201233223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122209 + ... + 131671.

It is an arithmetic number, because the mean of its divisors is an integer number (57437016).

Almost surely, 2^1201233220 is an apocalyptic number.

1201233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201233220 is an abundant number, since it is smaller than the sum of its proper divisors (1555743548).

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

1201233220 is a wasteful number, since it uses less digits than its factorization.

1201233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060 (or 10058 counting only the distinct ones).

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

The square root of 1201233220 is about 34658.8115780100. The cubic root of 1201233220 is about 1063.0224700530.

Adding to 1201233220 its reverse (223321021), we get a palindrome (1424554241).

The spelling of 1201233220 in words is "one billion, two hundred one million, two hundred thirty-three thousand, two hundred twenty".