201011011021121 has 16 divisors (see below), whose sum is σ = 235336478727168. Its totient is φ = 168088178227200.

The previous prime is 201011011021111. The next prime is 201011011021127. The reversal of 201011011021121 is 121120110110102.

It is not a de Polignac number, because 201011011021121 - 2⁶ = 201011011021057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201011011021096 and 201011011021105.

It is not an unprimeable number, because it can be changed into a prime (201011011021127) 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, 710561 + ... + 20063073.

It is an arithmetic number, because the mean of its divisors is an integer number (14708529920448).

Almost surely, 2^{201011011021121} is an apocalyptic number.

It is an amenable number.

201011011021121 is a deficient number, since it is larger than the sum of its proper divisors (34325467706047).

201011011021121 is a wasteful number, since it uses less digits than its factorization.

201011011021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19388752.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201011011021121 its reverse (121120110110102), we get a palindrome (322131121131223).

The spelling of 201011011021121 in words is "two hundred one trillion, eleven billion, eleven million, twenty-one thousand, one hundred twenty-one".