1221133030 has 32 divisors (see below), whose sum is σ = 2407255200. Its totient is φ = 443235072.

The previous prime is 1221133027. The next prime is 1221133037. The reversal of 1221133030 is 303311221.

It is a junction number, because it is equal to n+sod(n) for n = 1221132995 and 1221133013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221133037) 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, 71935 + ... + 87274.

It is an arithmetic number, because the mean of its divisors is an integer number (75226725).

Almost surely, 2^1221133030 is an apocalyptic number.

1221133030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221133030 is a deficient number, since it is larger than the sum of its proper divisors (1186122170).

1221133030 is a wasteful number, since it uses less digits than its factorization.

1221133030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159288.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1221133030 is about 34944.7139063979. The cubic root of 1221133030 is about 1068.8604136579.

Adding to 1221133030 its reverse (303311221), we get a palindrome (1524444251).

The spelling of 1221133030 in words is "one billion, two hundred twenty-one million, one hundred thirty-three thousand, thirty".