4021201573981 has 8 divisors (see below), whose sum is σ = 4057149666240. Its totient is φ = 3985259836992.

The previous prime is 4021201573967. The next prime is 4021201573997. The reversal of 4021201573981 is 1893751021204.

4021201573981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4021201573981 - 2³¹ = 4019054090333 is a prime.

It is a super-2 number, since 2×4021201573981² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021201573481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313135 + ... + 2853148.

It is an arithmetic number, because the mean of its divisors is an integer number (507143708280).

Almost surely, 2^{4021201573981} is an apocalyptic number.

It is an amenable number.

4021201573981 is a deficient number, since it is larger than the sum of its proper divisors (35948092259).

4021201573981 is a wasteful number, since it uses less digits than its factorization.

4021201573981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177635.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 4021201573981 in words is "four trillion, twenty-one billion, two hundred one million, five hundred seventy-three thousand, nine hundred eighty-one".