121102111020200 has 48 divisors (see below), whose sum is σ = 281565884044860. Its totient is φ = 48440246400000.

The previous prime is 121102111020197. The next prime is 121102111020221. The reversal of 121102111020200 is 2020111201121.

It can be written as a sum of positive squares in 6 ways, for example, as 108045754984036 + 13056356036164 = 10394506^2 + 3613358^2 .

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 11 ways as a sum of consecutive naturals, for example, 12683600 + ... + 20076800.

Almost surely, 2^{121102111020200} is an apocalyptic number.

121102111020200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102111020200 is an abundant number, since it is smaller than the sum of its proper divisors (160463773024660).

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

121102111020200 is a wasteful number, since it uses less digits than its factorization.

121102111020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7475118 (or 7475109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121102111020200 its reverse (2020111201121), we get a palindrome (123122222221321).

The spelling of 121102111020200 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred eleven million, twenty thousand, two hundred".