1212202031232 has 128 divisors (see below), whose sum is σ = 3228128640000. Its totient is φ = 403037533184.

The previous prime is 1212202031231. The next prime is 1212202031239. The reversal of 1212202031232 is 2321302022121.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 1212202031199 and 1212202031208.

It is not an unprimeable number, because it can be changed into a prime (1212202031231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455200333 + ... + 455202995.

It is an arithmetic number, because the mean of its divisors is an integer number (25219755000).

Almost surely, 2^{1212202031232} is an apocalyptic number.

1212202031232 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 1212202031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614064320000).

1212202031232 is an abundant number, since it is smaller than the sum of its proper divisors (2015926608768).

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

1212202031232 is a wasteful number, since it uses less digits than its factorization.

1212202031232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258 (or 5246 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1212202031232 its reverse (2321302022121), we get a palindrome (3533504053353).

The spelling of 1212202031232 in words is "one trillion, two hundred twelve billion, two hundred two million, thirty-one thousand, two hundred thirty-two".