221212030410 has 48 divisors (see below), whose sum is σ = 657315749376. Its totient is φ = 50562749664.

The previous prime is 221212030399. The next prime is 221212030483. The reversal of 221212030410 is 14030212122.

It is a happy number.

221212030410 is a `hidden beast` number, since 2 + 212 + 12 + 0 + 30 + 410 = 666.

221212030410 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221212030410² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 175564474 + ... + 175565733.

It is an arithmetic number, because the mean of its divisors is an integer number (13694078112).

Almost surely, 2^221212030410 is an apocalyptic number.

221212030410 is an abundant number, since it is smaller than the sum of its proper divisors (436103718966).

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

221212030410 is a wasteful number, since it uses less digits than its factorization.

221212030410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351130227 (or 351130224 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221212030410 its reverse (14030212122), we get a palindrome (235242242532).

The spelling of 221212030410 in words is "two hundred twenty-one billion, two hundred twelve million, thirty thousand, four hundred ten".