2100011020121 has 8 divisors (see below), whose sum is σ = 2404783995264. Its totient is φ = 1796430895200.

The previous prime is 2100011020111. The next prime is 2100011020123. The reversal of 2100011020121 is 1210201100012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100011020121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100011020123) 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, 298208780 + ... + 298215821.

It is an arithmetic number, because the mean of its divisors is an integer number (300597999408).

Almost surely, 2^{2100011020121} is an apocalyptic number.

It is an amenable number.

2100011020121 is a deficient number, since it is larger than the sum of its proper divisors (304772975143).

2100011020121 is an equidigital number, since it uses as much as digits as its factorization.

2100011020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596425111.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2100011020121 its reverse (1210201100012), we get a palindrome (3310212120133).

The spelling of 2100011020121 in words is "two trillion, one hundred billion, eleven million, twenty thousand, one hundred twenty-one".