1211201030124 has 48 divisors (see below), whose sum is σ = 3140986796640. Its totient is φ = 403626193920.

The previous prime is 1211201030113. The next prime is 1211201030147. The reversal of 1211201030124 is 4210301021121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1211201030097 and 1211201030106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084749 + ... + 1897124.

It is an arithmetic number, because the mean of its divisors is an integer number (65437224930).

Almost surely, 2^{1211201030124} is an apocalyptic number.

It is an amenable number.

1211201030124 is an abundant number, since it is smaller than the sum of its proper divisors (1929785766516).

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

1211201030124 is a wasteful number, since it uses less digits than its factorization.

1211201030124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985647 (or 2985639 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211201030124 its reverse (4210301021121), we get a palindrome (5421502051245).

The spelling of 1211201030124 in words is "one trillion, two hundred eleven billion, two hundred one million, thirty thousand, one hundred twenty-four".