201101022120021 has 8 divisors (see below), whose sum is σ = 283907325345984. Its totient is φ = 126181033487040.

The previous prime is 201101022120013. The next prime is 201101022120091. The reversal of 201101022120021 is 120021220101102.

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

It is not a de Polignac number, because 201101022120021 - 2³ = 201101022120013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101022120091) 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, 1971578648185 + ... + 1971578648286.

It is an arithmetic number, because the mean of its divisors is an integer number (35488415668248).

Almost surely, 2^{201101022120021} is an apocalyptic number.

It is an amenable number.

201101022120021 is a deficient number, since it is larger than the sum of its proper divisors (82806303225963).

201101022120021 is a wasteful number, since it uses less digits than its factorization.

201101022120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943157296491.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201101022120021 its reverse (120021220101102), we get a palindrome (321122242221123).

The spelling of 201101022120021 in words is "two hundred one trillion, one hundred one billion, twenty-two million, one hundred twenty thousand, twenty-one".