2100211101121 has 4 divisors (see below), whose sum is σ = 2400241258432. Its totient is φ = 1800180943812.

The previous prime is 2100211101103. The next prime is 2100211101179. The reversal of 2100211101121 is 1211011120012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100211101121 - 2⁹ = 2100211100609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100211101101) 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 3 ways as a sum of consecutive naturals, for example, 150015078645 + ... + 150015078658.

It is an arithmetic number, because the mean of its divisors is an integer number (600060314608).

Almost surely, 2^{2100211101121} is an apocalyptic number.

It is an amenable number.

2100211101121 is a deficient number, since it is larger than the sum of its proper divisors (300030157311).

2100211101121 is an equidigital number, since it uses as much as digits as its factorization.

2100211101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300030157310.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2100211101121 its reverse (1211011120012), we get a palindrome (3311222221133).

The spelling of 2100211101121 in words is "two trillion, one hundred billion, two hundred eleven million, one hundred one thousand, one hundred twenty-one".