421220520501050 has 48 divisors (see below), whose sum is σ = 796759943385600. Its totient is φ = 165630268147200.

The previous prime is 421220520501041. The next prime is 421220520501083. The reversal of 421220520501050 is 50105025022124.

It is a happy number.

It is a super-2 number, since 2×421220520501050² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

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, 229898471 + ... + 231723429.

It is an arithmetic number, because the mean of its divisors is an integer number (16599165487200).

Almost surely, 2^{421220520501050} is an apocalyptic number.

421220520501050 is a deficient number, since it is larger than the sum of its proper divisors (375539422884550).

421220520501050 is a wasteful number, since it uses less digits than its factorization.

421220520501050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903271 (or 1903266 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 421220520501050 its reverse (50105025022124), we get a palindrome (471325545523174).

The spelling of 421220520501050 in words is "four hundred twenty-one trillion, two hundred twenty billion, five hundred twenty million, five hundred one thousand, fifty".