1421423212220 has 24 divisors (see below), whose sum is σ = 3256351359408. Its totient is φ = 516881168000.

The previous prime is 1421423212219. The next prime is 1421423212343. The reversal of 1421423212220 is 222123241241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421423212220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3230507081 + ... + 3230507520.

It is an arithmetic number, because the mean of its divisors is an integer number (135681306642).

Almost surely, 2^{1421423212220} is an apocalyptic number.

1421423212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421423212220 is an abundant number, since it is smaller than the sum of its proper divisors (1834928147188).

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

1421423212220 is a wasteful number, since it uses less digits than its factorization.

1421423212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461014621 (or 6461014619 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1421423212220 its reverse (222123241241), we get a palindrome (1643546453461).

The spelling of 1421423212220 in words is "one trillion, four hundred twenty-one billion, four hundred twenty-three million, two hundred twelve thousand, two hundred twenty".