121022121100 has 36 divisors (see below), whose sum is σ = 278066124504. Its totient is φ = 45561268480.

The previous prime is 121022121097. The next prime is 121022121113. The reversal of 121022121100 is 1121220121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35593042 + ... + 35596441.

It is an arithmetic number, because the mean of its divisors is an integer number (7724059014).

Almost surely, 2^121022121100 is an apocalyptic number.

121022121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022121100 is an abundant number, since it is smaller than the sum of its proper divisors (157044003404).

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

121022121100 is a wasteful number, since it uses less digits than its factorization.

121022121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71189514 (or 71189507 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121022121100 its reverse (1121220121), we get a palindrome (122143341221).

It can be divided in two parts, 1210221 and 21100, that added together give a palindrome (1231321).

The spelling of 121022121100 in words is "one hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, one hundred".