2221205550125 has 32 divisors (see below), whose sum is σ = 2866215590784. Its totient is φ = 1717421328000.

The previous prime is 2221205550077. The next prime is 2221205550163. The reversal of 2221205550125 is 5210555021222.

It is not a de Polignac number, because 2221205550125 - 2¹⁸ = 2221205287981 is a prime.

It is a super-2 number, since 2×2221205550125² (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 = 2221205550091 and 2221205550100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1476887 + ... + 2573636.

It is an arithmetic number, because the mean of its divisors is an integer number (89569237212).

Almost surely, 2^{2221205550125} is an apocalyptic number.

2221205550125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2221205550125 is a deficient number, since it is larger than the sum of its proper divisors (645010040659).

2221205550125 is a wasteful number, since it uses less digits than its factorization.

2221205550125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050686 (or 4050676 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 2221205550125 in words is "two trillion, two hundred twenty-one billion, two hundred five million, five hundred fifty thousand, one hundred twenty-five".