201001201100021 has 8 divisors (see below), whose sum is σ = 229716312908544. Its totient is φ = 172286252918640.

The previous prime is 201001201099981. The next prime is 201001201100023. The reversal of 201001201100021 is 120001102100102.

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

It is not a de Polignac number, because 201001201100021 - 2³⁰ = 201000127358197 is a prime.

It is a super-3 number, since 3×201001201100021³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201001201099975 and 201001201100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001201100023) 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, 38263085 + ... + 43197986.

It is an arithmetic number, because the mean of its divisors is an integer number (28714539113568).

Almost surely, 2^{201001201100021} is an apocalyptic number.

It is an amenable number.

201001201100021 is a deficient number, since it is larger than the sum of its proper divisors (28715111808523).

201001201100021 is an equidigital number, since it uses as much as digits as its factorization.

201001201100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81813571.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201001201100021 its reverse (120001102100102), we get a palindrome (321002303200123).

The spelling of 201001201100021 in words is "two hundred one trillion, one billion, two hundred one million, one hundred thousand, twenty-one".