121000020112000 has 64 divisors (see below), whose sum is σ = 300836300043240. Its totient is φ = 48400008038400.

The previous prime is 121000020111989. The next prime is 121000020112091. The reversal of 121000020112000 is 211020000121.

It can be written as a sum of positive squares in 4 ways, for example, as 46021462023744 + 74978558088256 = 6783912^2 + 8659016^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3781234629 + ... + 3781266628.

Almost surely, 2^{121000020112000} is an apocalyptic number.

121000020112000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000020112000 is an abundant number, since it is smaller than the sum of its proper divisors (179836279931240).

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

121000020112000 is an frugal number, since it uses more digits than its factorization.

121000020112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7562501286 (or 7562501264 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121000020112000 its reverse (211020000121), we get a palindrome (121211040112121).

The spelling of 121000020112000 in words is "one hundred twenty-one trillion, twenty million, one hundred twelve thousand".