121011321102 has 192 divisors, whose sum is σ = 306921021696. Its totient is φ = 31582172160.

The previous prime is 121011321097. The next prime is 121011321103. The reversal of 121011321102 is 201123110121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011321103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 127783393 + ... + 127784339.

It is an arithmetic number, because the mean of its divisors is an integer number (1598546988).

Almost surely, 2^121011321102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121011321102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153460510848).

121011321102 is an abundant number, since it is smaller than the sum of its proper divisors (185909700594).

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

121011321102 is a wasteful number, since it uses less digits than its factorization.

121011321102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1704 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121011321102 its reverse (201123110121), we get a palindrome (322134431223).

The spelling of 121011321102 in words is "one hundred twenty-one billion, eleven million, three hundred twenty-one thousand, one hundred two".