12101221101 has 16 divisors (see below), whose sum is σ = 16767244800. Its totient is φ = 7754832960.

The previous prime is 12101221091. The next prime is 12101221103. The reversal of 12101221101 is 10112210121.

It is not a de Polignac number, because 12101221101 - 2¹⁹ = 12100696813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101221103) 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, 422790 + ... + 450503.

It is an arithmetic number, because the mean of its divisors is an integer number (1047952800).

Almost surely, 2^12101221101 is an apocalyptic number.

It is an amenable number.

12101221101 is a deficient number, since it is larger than the sum of its proper divisors (4666023699).

12101221101 is a wasteful number, since it uses less digits than its factorization.

12101221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873476.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12101221101 its reverse (10112210121), we get a palindrome (22213431222).

The spelling of 12101221101 in words is "twelve billion, one hundred one million, two hundred twenty-one thousand, one hundred one".