121020111102 has 32 divisors (see below), whose sum is σ = 266059499904. Its totient is φ = 36392813600.

The previous prime is 121020111053. The next prime is 121020111137. The reversal of 121020111102 is 201111020121.

It is a super-3 number, since 3×121020111102³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 6989973 + ... + 7007264.

It is an arithmetic number, because the mean of its divisors is an integer number (8314359372).

Almost surely, 2^121020111102 is an apocalyptic number.

121020111102 is an abundant number, since it is smaller than the sum of its proper divisors (145039388802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121020111102 is a wasteful number, since it uses less digits than its factorization.

121020111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13997384.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121020111102 its reverse (201111020121), we get a palindrome (322131131223).

The spelling of 121020111102 in words is "one hundred twenty-one billion, twenty million, one hundred eleven thousand, one hundred two".