421330522031 has 4 divisors (see below), whose sum is σ = 422685282864. Its totient is φ = 419975761200.

The previous prime is 421330521979. The next prime is 421330522043. The reversal of 421330522031 is 130225033124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421330522031 - 2¹⁸ = 421330259887 is a prime.

It is a super-2 number, since 2×421330522031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421330522061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677379950 + ... + 677380571.

It is an arithmetic number, because the mean of its divisors is an integer number (105671320716).

Almost surely, 2^421330522031 is an apocalyptic number.

421330522031 is a deficient number, since it is larger than the sum of its proper divisors (1354760833).

421330522031 is a wasteful number, since it uses less digits than its factorization.

421330522031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354760832.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 421330522031 its reverse (130225033124), we get a palindrome (551555555155).

The spelling of 421330522031 in words is "four hundred twenty-one billion, three hundred thirty million, five hundred twenty-two thousand, thirty-one".