12021110101 has 48 divisors (see below), whose sum is σ = 16267195008. Its totient is φ = 8626176000.

The previous prime is 12021110081. The next prime is 12021110137. The reversal of 12021110101 is 10101112021.

It is not a de Polignac number, because 12021110101 - 2²⁷ = 11886892373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021110141) 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, 7507701 + ... + 7509301.

It is an arithmetic number, because the mean of its divisors is an integer number (338899896).

Almost surely, 2^12021110101 is an apocalyptic number.

12021110101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021110101 is a deficient number, since it is larger than the sum of its proper divisors (4246084907).

12021110101 is a wasteful number, since it uses less digits than its factorization.

12021110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12021110101 its reverse (10101112021), we get a palindrome (22122222122).

The spelling of 12021110101 in words is "twelve billion, twenty-one million, one hundred ten thousand, one hundred one".