1211201130 has 32 divisors (see below), whose sum is σ = 2912630400. Its totient is φ = 322348352.

The previous prime is 1211201107. The next prime is 1211201207. The reversal of 1211201130 is 311021121.

It is a Curzon 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, 24390 + ... + 54929.

It is an arithmetic number, because the mean of its divisors is an integer number (91019700).

Almost surely, 2^1211201130 is an apocalyptic number.

1211201130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211201130 is an abundant number, since it is smaller than the sum of its proper divisors (1701429270).

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

1211201130 is a wasteful number, since it uses less digits than its factorization.

1211201130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79838.

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

The square root of 1211201130 is about 34802.3150092059. The cubic root of 1211201130 is about 1065.9547170788.

Adding to 1211201130 its reverse (311021121), we get a palindrome (1522222251).

Subtracting from 1211201130 its reverse (311021121), we obtain a square (900180009 = 30003²).

The spelling of 1211201130 in words is "one billion, two hundred eleven million, two hundred one thousand, one hundred thirty".