1421224154400 has 144 divisors (see below), whose sum is σ = 4626465324768. Its totient is φ = 378961920000.

The previous prime is 1421224154327. The next prime is 1421224154503. The reversal of 1421224154400 is 44514221241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55501600 + ... + 55527200.

It is an arithmetic number, because the mean of its divisors is an integer number (32128231422).

Almost surely, 2^{1421224154400} is an apocalyptic number.

1421224154400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421224154400 is an abundant number, since it is smaller than the sum of its proper divisors (3205241170368).

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

1421224154400 is a wasteful number, since it uses less digits than its factorization.

1421224154400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48755 (or 48742 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 1421224154400 its reverse (44514221241), we get a palindrome (1465738375641).

The spelling of 1421224154400 in words is "one trillion, four hundred twenty-one billion, two hundred twenty-four million, one hundred fifty-four thousand, four hundred".