1222172365140 has 144 divisors (see below), whose sum is σ = 3836869545600. Its totient is φ = 314528465664.

The previous prime is 1222172365103. The next prime is 1222172365151. The reversal of 1222172365140 is 415632712221.

1222172365140 is a `hidden beast` number, since 1 + 2 + 221 + 72 + 365 + 1 + 4 + 0 = 666.

It is a super-2 number, since 2×1222172365140² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1222172365095 and 1222172365104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11446521 + ... + 11552799.

It is an arithmetic number, because the mean of its divisors is an integer number (26644927400).

Almost surely, 2^{1222172365140} is an apocalyptic number.

1222172365140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222172365140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918434772800).

1222172365140 is an abundant number, since it is smaller than the sum of its proper divisors (2614697180460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222172365140 is a wasteful number, since it uses less digits than its factorization.

1222172365140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108526 (or 108521 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 1222172365140 in words is "one trillion, two hundred twenty-two billion, one hundred seventy-two million, three hundred sixty-five thousand, one hundred forty".