201211011021101 has 16 divisors (see below), whose sum is σ = 208609205232960. Its totient is φ = 193931581668480.

The previous prime is 201211011021061. The next prime is 201211011021109. The reversal of 201211011021101 is 101120110112102.

It is not a de Polignac number, because 201211011021101 - 2³⁰ = 201209937279277 is a prime.

It is a super-2 number, since 2×201211011021101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211011021109) 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, 98282951 + ... + 100309323.

It is an arithmetic number, because the mean of its divisors is an integer number (13038075327060).

Almost surely, 2^{201211011021101} is an apocalyptic number.

It is an amenable number.

201211011021101 is a deficient number, since it is larger than the sum of its proper divisors (7398194211859).

201211011021101 is a wasteful number, since it uses less digits than its factorization.

201211011021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055676.

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

Adding to 201211011021101 its reverse (101120110112102), we get a palindrome (302331121133203).

The spelling of 201211011021101 in words is "two hundred one trillion, two hundred eleven billion, eleven million, twenty-one thousand, one hundred one".