121111210021102 has 16 divisors (see below), whose sum is σ = 208197543697920. Its totient is φ = 51760222665048.

The previous prime is 121111210021099. The next prime is 121111210021111. The reversal of 121111210021102 is 201120012111121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12048463938 + ... + 12048473989.

It is an arithmetic number, because the mean of its divisors is an integer number (13012346481120).

Almost surely, 2^{121111210021102} is an apocalyptic number.

121111210021102 is a deficient number, since it is larger than the sum of its proper divisors (87086333676818).

121111210021102 is a wasteful number, since it uses less digits than its factorization.

121111210021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24096938295.

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

Adding to 121111210021102 its reverse (201120012111121), we get a palindrome (322231222132223).

The spelling of 121111210021102 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred ten million, twenty-one thousand, one hundred two".