221465345042 has 24 divisors (see below), whose sum is σ = 345741096960. Its totient is φ = 106375997520.

The previous prime is 221465345041. The next prime is 221465345051. The reversal of 221465345042 is 240543564122.

It is a super-2 number, since 2×221465345042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221465344987 and 221465345005.

It is not an unprimeable number, because it can be changed into a prime (221465345041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295634 + ... + 728237.

It is an arithmetic number, because the mean of its divisors is an integer number (14405879040).

Almost surely, 2^221465345042 is an apocalyptic number.

221465345042 is a deficient number, since it is larger than the sum of its proper divisors (124275751918).

221465345042 is a wasteful number, since it uses less digits than its factorization.

221465345042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024026 (or 1023989 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 221465345042 in words is "two hundred twenty-one billion, four hundred sixty-five million, three hundred forty-five thousand, forty-two".