121022123100 has 144 divisors (see below), whose sum is σ = 360031289856. Its totient is φ = 31368384000.

The previous prime is 121022123099. The next prime is 121022123129. The reversal of 121022123100 is 1321220121.

It is a super-2 number, since 2×121022123100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121022123100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3315147 + ... + 3351453.

Almost surely, 2^121022123100 is an apocalyptic number.

121022123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121022123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180015644928).

121022123100 is an abundant number, since it is smaller than the sum of its proper divisors (239009166756).

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

121022123100 is a wasteful number, since it uses less digits than its factorization.

121022123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36636 (or 36629 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121022123100 its reverse (1321220121), we get a palindrome (122343343221).

It can be divided in two parts, 1210221 and 23100, that added together give a palindrome (1233321).

The spelling of 121022123100 in words is "one hundred twenty-one billion, twenty-two million, one hundred twenty-three thousand, one hundred".