1211301030 has 16 divisors (see below), whose sum is σ = 2907122544. Its totient is φ = 323013600.

The previous prime is 1211301023. The next prime is 1211301059. The reversal of 1211301030 is 301031121.

It is a junction number, because it is equal to n+sod(n) for n = 1211300997 and 1211301015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20188321 + ... + 20188380.

It is an arithmetic number, because the mean of its divisors is an integer number (181695159).

Almost surely, 2^1211301030 is an apocalyptic number.

1211301030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211301030 is an abundant number, since it is smaller than the sum of its proper divisors (1695821514).

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

1211301030 is a wasteful number, since it uses less digits than its factorization.

1211301030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40376711.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1211301030 is about 34803.7502289624. The cubic root of 1211301030 is about 1065.9840229598.

Adding to 1211301030 its reverse (301031121), we get a palindrome (1512332151).

The spelling of 1211301030 in words is "one billion, two hundred eleven million, three hundred one thousand, thirty".