12021121102 has 4 divisors (see below), whose sum is σ = 18031681656. Its totient is φ = 6010560550.

The previous prime is 12021121027. The next prime is 12021121109. The reversal of 12021121102 is 20112112021.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021121109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005280274 + ... + 3005280277.

It is an arithmetic number, because the mean of its divisors is an integer number (4507920414).

Almost surely, 2^12021121102 is an apocalyptic number.

12021121102 is a deficient number, since it is larger than the sum of its proper divisors (6010560554).

12021121102 is an equidigital number, since it uses as much as digits as its factorization.

12021121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010560553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021121102 its reverse (20112112021), we get a palindrome (32133233123).

The spelling of 12021121102 in words is "twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred two".