121111102021102 has 16 divisors (see below), whose sum is σ = 189636388185600. Its totient is φ = 57900949987672.

The previous prime is 121111102021099. The next prime is 121111102021103. The reversal of 121111102021102 is 201120201111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111102021103) 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, 494216602 + ... + 494461597.

It is an arithmetic number, because the mean of its divisors is an integer number (11852274261600).

Almost surely, 2^{121111102021102} is an apocalyptic number.

121111102021102 is a deficient number, since it is larger than the sum of its proper divisors (68525286164498).

121111102021102 is a wasteful number, since it uses less digits than its factorization.

121111102021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988680887.

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

Adding to 121111102021102 its reverse (201120201111121), we get a palindrome (322231303132223).

The spelling of 121111102021102 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred two million, twenty-one thousand, one hundred two".