1021201254432 has 72 divisors (see below), whose sum is σ = 2930683735980. Its totient is φ = 337277468160.

The previous prime is 1021201254373. The next prime is 1021201254467. The reversal of 1021201254432 is 2344521021201.

1021201254432 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 201 + 25 + 4 + 432 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1020980910096 + 220344336 = 1010436^2 + 14844^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 1021201254396 and 1021201254405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16233919 + ... + 16296702.

Almost surely, 2^{1021201254432} is an apocalyptic number.

1021201254432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021201254432 is an abundant number, since it is smaller than the sum of its proper divisors (1909482481548).

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

1021201254432 is a wasteful number, since it uses less digits than its factorization.

1021201254432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32530746 (or 32530735 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 1021201254432 its reverse (2344521021201), we get a palindrome (3365722275633).

The spelling of 1021201254432 in words is "one trillion, twenty-one billion, two hundred one million, two hundred fifty-four thousand, four hundred thirty-two".