2120021100121 has 8 divisors (see below), whose sum is σ = 2159552952000. Its totient is φ = 2080609224720.

The previous prime is 2120021100107. The next prime is 2120021100137. The reversal of 2120021100121 is 1210011200212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120021100121 - 2²⁹ = 2119484229209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120021100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29958450 + ... + 30029131.

It is an arithmetic number, because the mean of its divisors is an integer number (269944119000).

Almost surely, 2^{2120021100121} is an apocalyptic number.

It is an amenable number.

2120021100121 is a deficient number, since it is larger than the sum of its proper divisors (39531851879).

2120021100121 is an equidigital number, since it uses as much as digits as its factorization.

2120021100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59988239.

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

Adding to 2120021100121 its reverse (1210011200212), we get a palindrome (3330032300333).

The spelling of 2120021100121 in words is "two trillion, one hundred twenty billion, twenty-one million, one hundred thousand, one hundred twenty-one".