1421211131340 has 1728 divisors, whose sum is σ = 5835194588160. Its totient is φ = 251361792000.

The previous prime is 1421211131273. The next prime is 1421211131387. The reversal of 1421211131340 is 431311121241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421211131340.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 14071397290 + ... + 14071397390.

It is an arithmetic number, because the mean of its divisors is an integer number (3376848720).

Almost surely, 2^{1421211131340} is an apocalyptic number.

1421211131340 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 1421211131340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2917597294080).

1421211131340 is an abundant number, since it is smaller than the sum of its proper divisors (4413983456820).

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

1421211131340 is a wasteful number, since it uses less digits than its factorization.

1421211131340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1421211131340 its reverse (431311121241), we get a palindrome (1852522252581).

It can be divided in two parts, 1421211 and 131340, that added together give a palindrome (1552551).

The spelling of 1421211131340 in words is "one trillion, four hundred twenty-one billion, two hundred eleven million, one hundred thirty-one thousand, three hundred forty".