121022011110 has 768 divisors, whose sum is σ = 434599022592. Its totient is φ = 20875345920.

The previous prime is 121022011027. The next prime is 121022011111. The reversal of 121022011110 is 11110220121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022011111) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 129158562 + ... + 129159498.

It is an arithmetic number, because the mean of its divisors is an integer number (565884144).

Almost surely, 2^121022011110 is an apocalyptic number.

121022011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121022011110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217299511296).

121022011110 is an abundant number, since it is smaller than the sum of its proper divisors (313577011482).

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

121022011110 is a wasteful number, since it uses less digits than its factorization.

121022011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1018 counting only the distinct ones).

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

Adding to 121022011110 its reverse (11110220121), we get a palindrome (132132231231).

It can be divided in two parts, 1210220111 and 10, that added together give a palindrome (1210220121).

The spelling of 121022011110 in words is "one hundred twenty-one billion, twenty-two million, eleven thousand, one hundred ten".