1211404050 has 144 divisors (see below), whose sum is σ = 3451898112. Its totient is φ = 304041600.

The previous prime is 1211404049. The next prime is 1211404057. The reversal of 1211404050 is 504041121.

1211404050 is a `hidden beast` number, since 1 + 211 + 404 + 0 + 50 = 666.

It is a super-3 number, since 3×1211404050³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211404057) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 514977 + ... + 517323.

Almost surely, 2^1211404050 is an apocalyptic number.

1211404050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211404050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725949056).

1211404050 is an abundant number, since it is smaller than the sum of its proper divisors (2240494062).

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

1211404050 is a wasteful number, since it uses less digits than its factorization.

1211404050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1211404050 is about 34805.2302104152. The cubic root of 1211404050 is about 1066.0142424121.

Adding to 1211404050 its reverse (504041121), we get a palindrome (1715445171).

The spelling of 1211404050 in words is "one billion, two hundred eleven million, four hundred four thousand, fifty".