421215222122 has 8 divisors (see below), whose sum is σ = 631829113536. Its totient is φ = 210605517612.

The previous prime is 421215222089. The next prime is 421215222133. The reversal of 421215222122 is 221222512124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 421215222091 and 421215222100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781808 + ... + 1205675.

It is an arithmetic number, because the mean of its divisors is an integer number (78978639192).

Almost surely, 2^421215222122 is an apocalyptic number.

421215222122 is a deficient number, since it is larger than the sum of its proper divisors (210613891414).

421215222122 is a wasteful number, since it uses less digits than its factorization.

421215222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093452.

The product of its digits is 2560, while the sum is 26.

Adding to 421215222122 its reverse (221222512124), we get a palindrome (642437734246).

The spelling of 421215222122 in words is "four hundred twenty-one billion, two hundred fifteen million, two hundred twenty-two thousand, one hundred twenty-two".