221060769240 has 64 divisors (see below), whose sum is σ = 663213339360. Its totient is φ = 58946780160.

The previous prime is 221060769211. The next prime is 221060769247. The reversal of 221060769240 is 42967060122.

It is a Cunningham number, because it is equal to 470171²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221060769247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4678212 + ... + 4725228.

Almost surely, 2^221060769240 is an apocalyptic number.

221060769240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221060769240 is an abundant number, since it is smaller than the sum of its proper divisors (442152570120).

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

221060769240 is a wasteful number, since it uses less digits than its factorization.

221060769240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86212 (or 86208 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 221060769240 in words is "two hundred twenty-one billion, sixty million, seven hundred sixty-nine thousand, two hundred forty".