101211111021201 has 48 divisors (see below), whose sum is σ = 149024054031552. Its totient is φ = 60882099486720.

The previous prime is 101211111021187. The next prime is 101211111021247. The reversal of 101211111021201 is 102120111112101.

It is not a de Polignac number, because 101211111021201 - 2¹⁰ = 101211111020177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101211111025201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4405680 + ... + 14894033.

It is an arithmetic number, because the mean of its divisors is an integer number (3104667792324).

Almost surely, 2^{101211111021201} is an apocalyptic number.

It is an amenable number.

101211111021201 is a deficient number, since it is larger than the sum of its proper divisors (47812943010351).

101211111021201 is a wasteful number, since it uses less digits than its factorization.

101211111021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19299902 (or 19299871 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101211111021201 its reverse (102120111112101), we get a palindrome (203331222133302).

The spelling of 101211111021201 in words is "one hundred one trillion, two hundred eleven billion, one hundred eleven million, twenty-one thousand, two hundred one".