221534462021444 has 48 divisors (see below), whose sum is σ = 461701672252800. Its totient is φ = 91678213981440.

The previous prime is 221534462021399. The next prime is 221534462021449. The reversal of 221534462021444 is 444120264435122.

It is a super-2 number, since 2×221534462021444² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 221534462021395 and 221534462021404.

It is not an unprimeable number, because it can be changed into a prime (221534462021449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2652684344 + ... + 2652767855.

It is an arithmetic number, because the mean of its divisors is an integer number (9618784838600).

Almost surely, 2^{221534462021444} is an apocalyptic number.

It is an amenable number.

221534462021444 is an abundant number, since it is smaller than the sum of its proper divisors (240167210231356).

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

221534462021444 is a wasteful number, since it uses less digits than its factorization.

221534462021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305452300 (or 5305452298 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 44.

The spelling of 221534462021444 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred sixty-two million, twenty-one thousand, four hundred forty-four".