20021002001201 has 8 divisors (see below), whose sum is σ = 20447077866240. Its totient is φ = 19594930182048.

The previous prime is 20021002001149. The next prime is 20021002001213. The reversal of 20021002001201 is 10210020012002.

It is a happy number.

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 20021002001201 - 2¹⁰ = 20021002000177 is a prime.

It is a super-2 number, since 2×20021002001201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20021002001281) 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, 10329605 + ... + 12113741.

It is an arithmetic number, because the mean of its divisors is an integer number (2555884733280).

Almost surely, 2^{20021002001201} is an apocalyptic number.

It is an amenable number.

20021002001201 is a deficient number, since it is larger than the sum of its proper divisors (426075865039).

20021002001201 is a wasteful number, since it uses less digits than its factorization.

20021002001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022943.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021002001201 its reverse (10210020012002), we get a palindrome (30231022013203).

The spelling of 20021002001201 in words is "twenty trillion, twenty-one billion, two million, one thousand, two hundred one".