201021022001001 has 16 divisors (see below), whose sum is σ = 274593919803840. Its totient is φ = 130759009392960.

The previous prime is 201021022000993. The next prime is 201021022001057. The reversal of 201021022001001 is 100100220120102.

It is not a de Polignac number, because 201021022001001 - 2³ = 201021022000993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201021022009001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3492466131 + ... + 3492523688.

It is an arithmetic number, because the mean of its divisors is an integer number (17162119987740).

Almost surely, 2^{201021022001001} is an apocalyptic number.

It is an amenable number.

201021022001001 is a deficient number, since it is larger than the sum of its proper divisors (73572897802839).

201021022001001 is a wasteful number, since it uses less digits than its factorization.

201021022001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984990056.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201021022001001 its reverse (100100220120102), we get a palindrome (301121242121103).

The spelling of 201021022001001 in words is "two hundred one trillion, twenty-one billion, twenty-two million, one thousand, one".