1211013023130 has 64 divisors (see below), whose sum is σ = 3333541248000. Its totient is φ = 312519487680.

The previous prime is 1211013023117. The next prime is 1211013023131. The reversal of 1211013023130 is 313203101121.

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

It is not an unprimeable number, because it can be changed into a prime (1211013023131) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 72334105 + ... + 72350844.

It is an arithmetic number, because the mean of its divisors is an integer number (52086582000).

Almost surely, 2^{1211013023130} is an apocalyptic number.

1211013023130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211013023130 is an abundant number, since it is smaller than the sum of its proper divisors (2122528224870).

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

1211013023130 is a wasteful number, since it uses less digits than its factorization.

1211013023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144684996 (or 144684990 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1211013023130 its reverse (313203101121), we get a palindrome (1524216124251).

The spelling of 1211013023130 in words is "one trillion, two hundred eleven billion, thirteen million, twenty-three thousand, one hundred thirty".