221245012310 has 64 divisors (see below), whose sum is σ = 456424049664. Its totient is φ = 75640521600.

The previous prime is 221245012271. The next prime is 221245012343. The reversal of 221245012310 is 13210542122.

It is a super-2 number, since 2×221245012310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41561309 + ... + 41566631.

It is an arithmetic number, because the mean of its divisors is an integer number (7131625776).

Almost surely, 2^221245012310 is an apocalyptic number.

221245012310 is an abundant number, since it is smaller than the sum of its proper divisors (235179037354).

221245012310 is a wasteful number, since it uses less digits than its factorization.

221245012310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 221245012310 its reverse (13210542122), we get a palindrome (234455554432).

The spelling of 221245012310 in words is "two hundred twenty-one billion, two hundred forty-five million, twelve thousand, three hundred ten".