2100211222015 has 16 divisors (see below), whose sum is σ = 2545464872736. Its totient is φ = 1663364752000.

The previous prime is 2100211222001. The next prime is 2100211222019. The reversal of 2100211222015 is 5102221120012.

It is a happy number.

It is not a de Polignac number, because 2100211222015 - 2⁷ = 2100211221887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100211221983 and 2100211222001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100211222019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4889889 + ... + 5302021.

It is an arithmetic number, because the mean of its divisors is an integer number (159091554546).

Almost surely, 2^{2100211222015} is an apocalyptic number.

2100211222015 is a deficient number, since it is larger than the sum of its proper divisors (445253650721).

2100211222015 is a wasteful number, since it uses less digits than its factorization.

2100211222015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422330.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 2100211222015 its reverse (5102221120012), we get a palindrome (7202432342027).

The spelling of 2100211222015 in words is "two trillion, one hundred billion, two hundred eleven million, two hundred twenty-two thousand, fifteen".