121212110102 has 16 divisors (see below), whose sum is σ = 187525132992. Its totient is φ = 58729267200.

The previous prime is 121212110101. The next prime is 121212110111. The reversal of 121212110102 is 201011212121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212110101) 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, 6374123 + ... + 6393110.

It is an arithmetic number, because the mean of its divisors is an integer number (11720320812).

Almost surely, 2^121212110102 is an apocalyptic number.

121212110102 is a deficient number, since it is larger than the sum of its proper divisors (66313022890).

121212110102 is a wasteful number, since it uses less digits than its factorization.

121212110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12767383.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121212110102 its reverse (201011212121), we get a palindrome (322223322223).

The spelling of 121212110102 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, one hundred two".