10021644435201 has 32 divisors (see below), whose sum is σ = 15302033184768. Its totient is φ = 5715057237120.

The previous prime is 10021644435197. The next prime is 10021644435203. The reversal of 10021644435201 is 10253444612001.

It is a happy number.

It is not a de Polignac number, because 10021644435201 - 2² = 10021644435197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10021644435203) 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, 20299356 + ... + 20787186.

It is an arithmetic number, because the mean of its divisors is an integer number (478188537024).

Almost surely, 2^{10021644435201} is an apocalyptic number.

It is an amenable number.

10021644435201 is a deficient number, since it is larger than the sum of its proper divisors (5280388749567).

10021644435201 is a wasteful number, since it uses less digits than its factorization.

10021644435201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489821.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 10021644435201 in words is "ten trillion, twenty-one billion, six hundred forty-four million, four hundred thirty-five thousand, two hundred one".