1221032030 has 32 divisors (see below), whose sum is σ = 2271449088. Its totient is φ = 472096800.

The previous prime is 1221031993. The next prime is 1221032077. The reversal of 1221032030 is 302301221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221031996 and 1221032014.

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, 340145 + ... + 343715.

It is an arithmetic number, because the mean of its divisors is an integer number (70982784).

Almost surely, 2^1221032030 is an apocalyptic number.

1221032030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221032030 is a deficient number, since it is larger than the sum of its proper divisors (1050417058).

1221032030 is a wasteful number, since it uses less digits than its factorization.

1221032030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1221032030 is about 34943.2687366251. The cubic root of 1221032030 is about 1068.8309443384.

Adding to 1221032030 its reverse (302301221), we get a palindrome (1523333251).

The spelling of 1221032030 in words is "one billion, two hundred twenty-one million, thirty-two thousand, thirty".