1421300221040 has 120 divisors (see below), whose sum is σ = 3845653027632. Its totient is φ = 487098071040.

The previous prime is 1421300221031. The next prime is 1421300221043. The reversal of 1421300221040 is 401220031241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421300221043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9399635 + ... + 9549645.

Almost surely, 2^{1421300221040} is an apocalyptic number.

1421300221040 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 1421300221040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1922826513816).

1421300221040 is an abundant number, since it is smaller than the sum of its proper divisors (2424352806592).

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

1421300221040 is a wasteful number, since it uses less digits than its factorization.

1421300221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152455 (or 152442 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1421300221040 its reverse (401220031241), we get a palindrome (1822520252281).

The spelling of 1421300221040 in words is "one trillion, four hundred twenty-one billion, three hundred million, two hundred twenty-one thousand, forty".