1220356030 has 16 divisors (see below), whose sum is σ = 2219288400. Its totient is φ = 483109632.

The previous prime is 1220356003. The next prime is 1220356037. The reversal of 1220356030 is 306530221.

It is a junction number, because it is equal to n+sod(n) for n = 1220355992 and 1220356010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220356037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628080 + ... + 630019.

It is an arithmetic number, because the mean of its divisors is an integer number (138705525).

Almost surely, 2^1220356030 is an apocalyptic number.

1220356030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220356030 is a deficient number, since it is larger than the sum of its proper divisors (998932370).

1220356030 is a wasteful number, since it uses less digits than its factorization.

1220356030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258203.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1220356030 is about 34933.5945759952. The cubic root of 1220356030 is about 1068.6336622908.

Adding to 1220356030 its reverse (306530221), we get a palindrome (1526886251).

The spelling of 1220356030 in words is "one billion, two hundred twenty million, three hundred fifty-six thousand, thirty".