1550162221200 has 600 divisors, whose sum is σ = 5611639198176. Its totient is φ = 411505920000.

The previous prime is 1550162221147. The next prime is 1550162221211. The reversal of 1550162221200 is 21222610551.

1550162221200 is a `hidden beast` number, since 15 + 5 + 0 + 1 + 622 + 2 + 1 + 20 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (600).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3157152955 + ... + 3157153445.

Almost surely, 2^{1550162221200} is an apocalyptic number.

1550162221200 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 1550162221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2805819599088).

1550162221200 is an abundant number, since it is smaller than the sum of its proper divisors (4061476976976).

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

1550162221200 is an frugal number, since it uses more digits than its factorization.

1550162221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 1550162221200 its reverse (21222610551), we get a palindrome (1571384831751).

The spelling of 1550162221200 in words is "one trillion, five hundred fifty billion, one hundred sixty-two million, two hundred twenty-one thousand, two hundred".