221342116026 has 32 divisors (see below), whose sum is σ = 486243555840. Its totient is φ = 66858487344.

The previous prime is 221342116001. The next prime is 221342116033. The reversal of 221342116026 is 620611243122.

It is a junction number, because it is equal to n+sod(n) for n = 221342115984 and 221342116002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42206020 + ... + 42211263.

It is an arithmetic number, because the mean of its divisors is an integer number (15195111120).

Almost surely, 2^221342116026 is an apocalyptic number.

221342116026 is an abundant number, since it is smaller than the sum of its proper divisors (264901439814).

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

221342116026 is a wasteful number, since it uses less digits than its factorization.

221342116026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84417330.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 221342116026 its reverse (620611243122), we get a palindrome (841953359148).

The spelling of 221342116026 in words is "two hundred twenty-one billion, three hundred forty-two million, one hundred sixteen thousand, twenty-six".