12121102102 has 32 divisors (see below), whose sum is σ = 20030392800. Its totient is φ = 5475445248.

The previous prime is 12121102093. The next prime is 12121102111. The reversal of 12121102102 is 20120112121.

It is an interprime number because it is at equal distance from previous prime (12121102093) and next prime (12121102111).

It is a super-2 number, since 2×12121102102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135049 + ... + 206107.

It is an arithmetic number, because the mean of its divisors is an integer number (625949775).

Almost surely, 2^12121102102 is an apocalyptic number.

12121102102 is a deficient number, since it is larger than the sum of its proper divisors (7909290698).

12121102102 is a wasteful number, since it uses less digits than its factorization.

12121102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71280.

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

Adding to 12121102102 its reverse (20120112121), we get a palindrome (32241214223).

The spelling of 12121102102 in words is "twelve billion, one hundred twenty-one million, one hundred two thousand, one hundred two".