221301040155412 has 48 divisors (see below), whose sum is σ = 472936923486720. Its totient is φ = 88445346688512.

The previous prime is 221301040155401. The next prime is 221301040155431. The reversal of 221301040155412 is 214551040103122.

It is a super-2 number, since 2×221301040155412² (a number of 29 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 15 ways as a sum of consecutive naturals, for example, 2132600188 + ... + 2132703955.

It is an arithmetic number, because the mean of its divisors is an integer number (9852852572640).

Almost surely, 2^{221301040155412} is an apocalyptic number.

It is an amenable number.

221301040155412 is an abundant number, since it is smaller than the sum of its proper divisors (251635883331308).

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

221301040155412 is a wasteful number, since it uses less digits than its factorization.

221301040155412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265304280 (or 4265304278 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 221301040155412 its reverse (214551040103122), we get a palindrome (435852080258534).

The spelling of 221301040155412 in words is "two hundred twenty-one trillion, three hundred one billion, forty million, one hundred fifty-five thousand, four hundred twelve".