1221132030 has 64 divisors (see below), whose sum is σ = 2975289408. Its totient is φ = 320716800.

The previous prime is 1221132019. The next prime is 1221132041. The reversal of 1221132030 is 302311221.

It is an interprime number because it is at equal distance from previous prime (1221132019) and next prime (1221132041).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677130 + ... + 678930.

It is an arithmetic number, because the mean of its divisors is an integer number (46488897).

Almost surely, 2^1221132030 is an apocalyptic number.

1221132030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221132030 is an abundant number, since it is smaller than the sum of its proper divisors (1754157378).

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

1221132030 is a wasteful number, since it uses less digits than its factorization.

1221132030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1221132030 is about 34944.6995980792. The cubic root of 1221132030 is about 1068.8601218904.

Adding to 1221132030 its reverse (302311221), we get a palindrome (1523443251).

It can be divided in two parts, 12211320 and 30, that multiplied together give a square (366339600 = 19140²).

The spelling of 1221132030 in words is "one billion, two hundred twenty-one million, one hundred thirty-two thousand, thirty".