2221255355400 has 288 divisors, whose sum is σ = 8193741192000. Its totient is φ = 536760829440.

The previous prime is 2221255355309. The next prime is 2221255355437. The reversal of 2221255355400 is 45535521222.

2221255355400 is a `hidden beast` number, since 2 + 2 + 2 + 12 + 553 + 55 + 40 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 625335 + ... + 2198534.

It is an arithmetic number, because the mean of its divisors is an integer number (28450490250).

Almost surely, 2^{2221255355400} is an apocalyptic number.

2221255355400 is a gapful number since it is divisible by the number (20) 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 2221255355400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4096870596000).

2221255355400 is an abundant number, since it is smaller than the sum of its proper divisors (5972485836600).

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

2221255355400 is a wasteful number, since it uses less digits than its factorization.

2221255355400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823933 (or 2823921 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 2221255355400 in words is "two trillion, two hundred twenty-one billion, two hundred fifty-five million, three hundred fifty-five thousand, four hundred".