12101102121021 has 8 divisors (see below), whose sum is σ = 16836315994560. Its totient is φ = 7716644830752.

The previous prime is 12101102121011. The next prime is 12101102121029. The reversal of 12101102121021 is 12012120110121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12101102121021 - 2⁶ = 12101102120957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101102121029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87689145736 + ... + 87689145873.

It is an arithmetic number, because the mean of its divisors is an integer number (2104539499320).

Almost surely, 2^{12101102121021} is an apocalyptic number.

It is an amenable number.

12101102121021 is a deficient number, since it is larger than the sum of its proper divisors (4735213873539).

12101102121021 is a wasteful number, since it uses less digits than its factorization.

12101102121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175378291635.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12101102121021 its reverse (12012120110121), we get a palindrome (24113222231142).

The spelling of 12101102121021 in words is "twelve trillion, one hundred one billion, one hundred two million, one hundred twenty-one thousand, twenty-one".