1222001212432 has 160 divisors (see below), whose sum is σ = 3185460117504. Its totient is φ = 438575731200.

The previous prime is 1222001212391. The next prime is 1222001212433. The reversal of 1222001212432 is 2342121002221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1222001212433) 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, 7721457 + ... + 7878127.

Almost surely, 2^{1222001212432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222001212432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592730058752).

1222001212432 is an abundant number, since it is smaller than the sum of its proper divisors (1963458905072).

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

1222001212432 is a wasteful number, since it uses less digits than its factorization.

1222001212432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157197 (or 157191 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1222001212432 its reverse (2342121002221), we get a palindrome (3564122214653).

The spelling of 1222001212432 in words is "one trillion, two hundred twenty-two billion, one million, two hundred twelve thousand, four hundred thirty-two".