201010021001001 has 48 divisors (see below), whose sum is σ = 294579732096000. Its totient is φ = 132063810278400.

The previous prime is 201010021000981. The next prime is 201010021001011. The reversal of 201010021001001 is 100100120010102.

It is a happy number.

It is not a de Polignac number, because 201010021001001 - 2⁴¹ = 198810997745449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (201010021001011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 560848465 + ... + 561206753.

It is an arithmetic number, because the mean of its divisors is an integer number (6137077752000).

Almost surely, 2^{201010021001001} is an apocalyptic number.

It is an amenable number.

201010021001001 is a deficient number, since it is larger than the sum of its proper divisors (93569711094999).

201010021001001 is a wasteful number, since it uses less digits than its factorization.

201010021001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360694 (or 360691 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201010021001001 its reverse (100100120010102), we get a palindrome (301110141011103).

The spelling of 201010021001001 in words is "two hundred one trillion, ten billion, twenty-one million, one thousand, one".