12102121662 has 16 divisors (see below), whose sum is σ = 24214619520. Its totient is φ = 4032311192.

The previous prime is 12102121639. The next prime is 12102121663. The reversal of 12102121662 is 26612120121.

It is a super-2 number, since 2×12102121662² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102121663) 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, 417138 + ... + 445205.

It is an arithmetic number, because the mean of its divisors is an integer number (1513413720).

Almost surely, 2^12102121662 is an apocalyptic number.

12102121662 is an abundant number, since it is smaller than the sum of its proper divisors (12112497858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12102121662 is a wasteful number, since it uses less digits than its factorization.

12102121662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864687.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 12102121662 its reverse (26612120121), we get a palindrome (38714241783).

The spelling of 12102121662 in words is "twelve billion, one hundred two million, one hundred twenty-one thousand, six hundred sixty-two".