1211009950 has 24 divisors (see below), whose sum is σ = 2273539752. Its totient is φ = 479874720.

The previous prime is 1211009941. The next prime is 1211009951. The reversal of 1211009950 is 599001121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211009951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107829 + ... + 118528.

It is an arithmetic number, because the mean of its divisors is an integer number (94730823).

Almost surely, 2^1211009950 is an apocalyptic number.

1211009950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211009950 is a deficient number, since it is larger than the sum of its proper divisors (1062529802).

1211009950 is a wasteful number, since it uses less digits than its factorization.

1211009950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226476 (or 226471 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 1211009950 is about 34799.5682444481. The cubic root of 1211009950 is about 1065.8986295194.

The spelling of 1211009950 in words is "one billion, two hundred eleven million, nine thousand, nine hundred fifty".