2111206203125 has 28 divisors (see below), whose sum is σ = 2640314250420. Its totient is φ = 1688107200000.

The previous prime is 2111206203121. The next prime is 2111206203131. The reversal of 2111206203125 is 5213026021112.

It can be written as a sum of positive squares in 14 ways, for example, as 2071279369636 + 39926833489 = 1439194^2 + 199817^2 .

It is not a de Polignac number, because 2111206203125 - 2² = 2111206203121 is a prime.

It is a super-2 number, since 2×2111206203125² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111206203094 and 2111206203103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111206203121) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 31669829 + ... + 31736421.

It is an arithmetic number, because the mean of its divisors is an integer number (94296937515).

Almost surely, 2^{2111206203125} is an apocalyptic number.

2111206203125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111206203125 is a deficient number, since it is larger than the sum of its proper divisors (529108047295).

2111206203125 is an frugal number, since it uses more digits than its factorization.

2111206203125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68652 (or 68627 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 2111206203125 in words is "two trillion, one hundred eleven billion, two hundred six million, two hundred three thousand, one hundred twenty-five".