1211230243130 has 16 divisors (see below), whose sum is σ = 2180229674400. Its totient is φ = 484488711312.

The previous prime is 1211230243087. The next prime is 1211230243133. The reversal of 1211230243130 is 313420321121.

It is a junction number, because it is equal to n+sod(n) for n = 1211230243096 and 1211230243105.

It is not an unprimeable number, because it can be changed into a prime (1211230243133) 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, 1491821 + ... + 2155919.

It is an arithmetic number, because the mean of its divisors is an integer number (136264354650).

Almost surely, 2^{1211230243130} is an apocalyptic number.

1211230243130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211230243130 is a deficient number, since it is larger than the sum of its proper divisors (968999431270).

1211230243130 is a wasteful number, since it uses less digits than its factorization.

1211230243130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846493.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1211230243130 its reverse (313420321121), we get a palindrome (1524650564251).

The spelling of 1211230243130 in words is "one trillion, two hundred eleven billion, two hundred thirty million, two hundred forty-three thousand, one hundred thirty".