221312220034 has 4 divisors (see below), whose sum is σ = 331968330054. Its totient is φ = 110656110016.

The previous prime is 221312220007. The next prime is 221312220067. The reversal of 221312220034 is 430022213122.

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

It can be written as a sum of positive squares in only one way, i.e., 120031067025 + 101281153009 = 346455^2 + 318247^2 .

It is a super-2 number, since 2×221312220034² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221312219987 and 221312220014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55328055007 + ... + 55328055010.

Almost surely, 2^221312220034 is an apocalyptic number.

221312220034 is a deficient number, since it is larger than the sum of its proper divisors (110656110020).

221312220034 is a wasteful number, since it uses less digits than its factorization.

221312220034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110656110019.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221312220034 its reverse (430022213122), we get a palindrome (651334433156).

The spelling of 221312220034 in words is "two hundred twenty-one billion, three hundred twelve million, two hundred twenty thousand, thirty-four".