2100121102201 has 8 divisors (see below), whose sum is σ = 2105158977000. Its totient is φ = 2095084830720.

The previous prime is 2100121102199. The next prime is 2100121102223. The reversal of 2100121102201 is 1022011210012.

It can be written as a sum of positive squares in 4 ways, for example, as 208186875625 + 1891934226576 = 456275^2 + 1375476^2 .

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 2100121102201 - 2¹ = 2100121102199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100121102291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242905 + ... + 3038233.

It is an arithmetic number, because the mean of its divisors is an integer number (263144872125).

Almost surely, 2^{2100121102201} is an apocalyptic number.

It is an amenable number.

2100121102201 is a deficient number, since it is larger than the sum of its proper divisors (5037874799).

2100121102201 is an equidigital number, since it uses as much as digits as its factorization.

2100121102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801659.

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

Adding to 2100121102201 its reverse (1022011210012), we get a palindrome (3122132312213).

The spelling of 2100121102201 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred two thousand, two hundred one".