2100001122105 has 16 divisors (see below), whose sum is σ = 3360037711104. Its totient is φ = 1119988626560.

The previous prime is 2100001122097. The next prime is 2100001122211. The reversal of 2100001122105 is 5012211000012.

It is not a de Polignac number, because 2100001122105 - 2³ = 2100001122097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805957 + ... + 2202173.

It is an arithmetic number, because the mean of its divisors is an integer number (210002356944).

Almost surely, 2^{2100001122105} is an apocalyptic number.

It is an amenable number.

2100001122105 is a deficient number, since it is larger than the sum of its proper divisors (1260036588999).

2100001122105 is a wasteful number, since it uses less digits than its factorization.

2100001122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496496.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 2100001122105 its reverse (5012211000012), we get a palindrome (7112212122117).

The spelling of 2100001122105 in words is "two trillion, one hundred billion, one million, one hundred twenty-two thousand, one hundred five".