1211023123032 has 128 divisors (see below), whose sum is σ = 3215647987200. Its totient is φ = 378745694208.

The previous prime is 1211023123019. The next prime is 1211023123039. The reversal of 1211023123032 is 2303213201121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211023123039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206339394 + ... + 206345262.

It is an arithmetic number, because the mean of its divisors is an integer number (25122249900).

Almost surely, 2^{1211023123032} is an apocalyptic number.

1211023123032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211023123032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607823993600).

1211023123032 is an abundant number, since it is smaller than the sum of its proper divisors (2004624864168).

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

1211023123032 is a wasteful number, since it uses less digits than its factorization.

1211023123032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385 (or 7381 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1211023123032 its reverse (2303213201121), we get a palindrome (3514236324153).

The spelling of 1211023123032 in words is "one trillion, two hundred eleven billion, twenty-three million, one hundred twenty-three thousand, thirty-two".