1211432201 has 8 divisors (see below), whose sum is σ = 1391452800. Its totient is φ = 1033151328.

The previous prime is 1211432179. The next prime is 1211432231. The reversal of 1211432201 is 1022341121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211432201 - 2¹⁸ = 1211170057 is a prime.

It is a super-3 number, since 3×1211432201³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211432201.

It is not an unprimeable number, because it can be changed into a prime (1211432231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433436 + ... + 436221.

It is an arithmetic number, because the mean of its divisors is an integer number (173931600).

Almost surely, 2^1211432201 is an apocalyptic number.

It is an amenable number.

1211432201 is a deficient number, since it is larger than the sum of its proper divisors (180020599).

1211432201 is an equidigital number, since it uses as much as digits as its factorization.

1211432201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869863.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1211432201 is about 34805.6346156768. The cubic root of 1211432201 is about 1066.0224998096.

Adding to 1211432201 its reverse (1022341121), we get a palindrome (2233773322).

The spelling of 1211432201 in words is "one billion, two hundred eleven million, four hundred thirty-two thousand, two hundred one".