221357141446 has 32 divisors (see below), whose sum is σ = 382312042560. Its totient is φ = 94156947456.

The previous prime is 221357141431. The next prime is 221357141459. The reversal of 221357141446 is 644141753122.

It is a super-3 number, since 3×221357141446³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221357141399 and 221357141408.

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, 16620486 + ... + 16633798.

It is an arithmetic number, because the mean of its divisors is an integer number (11947251330).

Almost surely, 2^221357141446 is an apocalyptic number.

221357141446 is a deficient number, since it is larger than the sum of its proper divisors (160954901114).

221357141446 is a wasteful number, since it uses less digits than its factorization.

221357141446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22128.

The product of its digits is 161280, while the sum is 40.

Adding to 221357141446 its reverse (644141753122), we get a palindrome (865498894568).

The spelling of 221357141446 in words is "two hundred twenty-one billion, three hundred fifty-seven million, one hundred forty-one thousand, four hundred forty-six".