221011144244135 has 32 divisors (see below), whose sum is σ = 304858214462592. Its totient is φ = 150671920412160.

The previous prime is 221011144244119. The next prime is 221011144244159. The reversal of 221011144244135 is 531442441110122.

It is not a de Polignac number, because 221011144244135 - 2⁴ = 221011144244119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 221011144244095 and 221011144244104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397638725 + ... + 398194145.

It is an arithmetic number, because the mean of its divisors is an integer number (9526819201956).

Almost surely, 2^{221011144244135} is an apocalyptic number.

221011144244135 is a deficient number, since it is larger than the sum of its proper divisors (83847070218457).

221011144244135 is a wasteful number, since it uses less digits than its factorization.

221011144244135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621323.

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 221011144244135 its reverse (531442441110122), we get a palindrome (752453585354257).

The spelling of 221011144244135 in words is "two hundred twenty-one trillion, eleven billion, one hundred forty-four million, two hundred forty-four thousand, one hundred thirty-five".