1211020124 has 12 divisors (see below), whose sum is σ = 2121190344. Its totient is φ = 604965744.

The previous prime is 1211020123. The next prime is 1211020159. The reversal of 1211020124 is 4210201121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211020099 and 1211020108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211020121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131054 + ... + 139989.

It is an arithmetic number, because the mean of its divisors is an integer number (176765862).

Almost surely, 2^1211020124 is an apocalyptic number.

It is an amenable number.

1211020124 is a deficient number, since it is larger than the sum of its proper divisors (910170220).

1211020124 is a wasteful number, since it uses less digits than its factorization.

1211020124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272164 (or 272162 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211020124 is about 34799.7144241156. The cubic root of 1211020124 is about 1065.9016144721.

Adding to 1211020124 its reverse (4210201121), we get a palindrome (5421221245).

The spelling of 1211020124 in words is "one billion, two hundred eleven million, twenty thousand, one hundred twenty-four".