121022130100 has 36 divisors (see below), whose sum is σ = 271673822700. Its totient is φ = 46739580160.

The previous prime is 121022130079. The next prime is 121022130121. The reversal of 121022130100 is 1031220121.

It is an interprime number because it is at equal distance from previous prime (121022130079) and next prime (121022130121).

It can be written as a sum of positive squares in 6 ways, for example, as 8057575696 + 112964554404 = 89764^2 + 336102^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20862985 + ... + 20868784.

It is an arithmetic number, because the mean of its divisors is an integer number (7546495075).

Almost surely, 2^121022130100 is an apocalyptic number.

121022130100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022130100 is an abundant number, since it is smaller than the sum of its proper divisors (150651692600).

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

121022130100 is a wasteful number, since it uses less digits than its factorization.

121022130100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41731812 (or 41731805 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121022130100 its reverse (1031220121), we get a palindrome (122053350221).

The spelling of 121022130100 in words is "one hundred twenty-one billion, twenty-two million, one hundred thirty thousand, one hundred".