1421544302220 has 48 divisors (see below), whose sum is σ = 4548941768448. Its totient is φ = 324924411840.

The previous prime is 1421544302219. The next prime is 1421544302281. The reversal of 1421544302220 is 222034451241.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 1692314226 + ... + 1692315065.

It is an arithmetic number, because the mean of its divisors is an integer number (94769620176).

Almost surely, 2^{1421544302220} is an apocalyptic number.

1421544302220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421544302220 is an abundant number, since it is smaller than the sum of its proper divisors (3127397466228).

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

1421544302220 is a wasteful number, since it uses less digits than its factorization.

1421544302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384629310 (or 3384629308 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1421544302220 its reverse (222034451241), we get a palindrome (1643578753461).

The spelling of 1421544302220 in words is "one trillion, four hundred twenty-one billion, five hundred forty-four million, three hundred two thousand, two hundred twenty".