221025510460046 has 4 divisors (see below), whose sum is σ = 331538265690072. Its totient is φ = 110512755230022.

The previous prime is 221025510459883. The next prime is 221025510460067. The reversal of 221025510460046 is 640064015520122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221025510459991 and 221025510460009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55256377615010 + ... + 55256377615013.

It is an arithmetic number, because the mean of its divisors is an integer number (82884566422518).

Almost surely, 2^{221025510460046} is an apocalyptic number.

221025510460046 is a deficient number, since it is larger than the sum of its proper divisors (110512755230026).

221025510460046 is a wasteful number, since it uses less digits than its factorization.

221025510460046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110512755230025.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 221025510460046 its reverse (640064015520122), we get a palindrome (861089525980168).

The spelling of 221025510460046 in words is "two hundred twenty-one trillion, twenty-five billion, five hundred ten million, four hundred sixty thousand, forty-six".