221442130154340 has 144 divisors (see below), whose sum is σ = 689492330182656. Its totient is φ = 57493625817600.

The previous prime is 221442130154339. The next prime is 221442130154347. The reversal of 221442130154340 is 43451031244122.

221442130154340 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 4 + 2 + 1 + 301 + 5 + 4 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 221442130154295 and 221442130154304.

It is not an unprimeable number, because it can be changed into a prime (221442130154347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26932132 + ... + 34179291.

It is an arithmetic number, because the mean of its divisors is an integer number (4788141181824).

Almost surely, 2^{221442130154340} is an apocalyptic number.

221442130154340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221442130154340 is an abundant number, since it is smaller than the sum of its proper divisors (468050200028316).

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

221442130154340 is a wasteful number, since it uses less digits than its factorization.

221442130154340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61111970 (or 61111965 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 221442130154340 its reverse (43451031244122), we get a palindrome (264893161398462).

The spelling of 221442130154340 in words is "two hundred twenty-one trillion, four hundred forty-two billion, one hundred thirty million, one hundred fifty-four thousand, three hundred forty".