1213021111032 has 192 divisors, whose sum is σ = 3508569792000. Its totient is φ = 392452729344.

The previous prime is 1213021111019. The next prime is 1213021111039. The reversal of 1213021111032 is 2301111203121.

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 = 1213021110996 and 1213021111014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213021111039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8994048 + ... + 9127920.

It is an arithmetic number, because the mean of its divisors is an integer number (18273801000).

Almost surely, 2^{1213021111032} is an apocalyptic number.

1213021111032 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 1213021111032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1754284896000).

1213021111032 is an abundant number, since it is smaller than the sum of its proper divisors (2295548680968).

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

1213021111032 is a wasteful number, since it uses less digits than its factorization.

1213021111032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134032 (or 134016 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213021111032 its reverse (2301111203121), we get a palindrome (3514132314153).

The spelling of 1213021111032 in words is "one trillion, two hundred thirteen billion, twenty-one million, one hundred eleven thousand, thirty-two".