121211111102 has 8 divisors (see below), whose sum is σ = 187681720512. Its totient is φ = 58650537600.

The previous prime is 121211111081. The next prime is 121211111129. The reversal of 121211111102 is 201111112121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977508899 + ... + 977509022.

It is an arithmetic number, because the mean of its divisors is an integer number (23460215064).

Almost surely, 2^121211111102 is an apocalyptic number.

121211111102 is a deficient number, since it is larger than the sum of its proper divisors (66470609410).

121211111102 is a wasteful number, since it uses less digits than its factorization.

121211111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955017954.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121211111102 its reverse (201111112121), we get a palindrome (322322223223).

The spelling of 121211111102 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred two".