2100212002111 has 4 divisors (see below), whose sum is σ = 2100258521424. Its totient is φ = 2100165482800.

The previous prime is 2100212002099. The next prime is 2100212002123. The reversal of 2100212002111 is 1112002120012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2100212002099) and next prime (2100212002123).

It is a cyclic number.

It is not a de Polignac number, because 2100212002111 - 2⁵ = 2100212002079 is a prime.

It is a super-2 number, since 2×2100212002111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100212002091 and 2100212002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100212032111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23191870 + ... + 23282251.

It is an arithmetic number, because the mean of its divisors is an integer number (525064630356).

Almost surely, 2^{2100212002111} is an apocalyptic number.

2100212002111 is a deficient number, since it is larger than the sum of its proper divisors (46519313).

2100212002111 is an equidigital number, since it uses as much as digits as its factorization.

2100212002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46519312.

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

Adding to 2100212002111 its reverse (1112002120012), we get a palindrome (3212214122123).

The spelling of 2100212002111 in words is "two trillion, one hundred billion, two hundred twelve million, two thousand, one hundred eleven".