2145211224 has 64 divisors (see below), whose sum is σ = 5898493440. Its totient is φ = 646016640.

The previous prime is 2145211183. The next prime is 2145211231. The reversal of 2145211224 is 4221125412.

It is a super-3 number, since 3×2145211224³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2145211194 and 2145211203.

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, 58482 + ... + 87809.

It is an arithmetic number, because the mean of its divisors is an integer number (92163960).

Almost surely, 2^2145211224 is an apocalyptic number.

2145211224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2145211224 is an abundant number, since it is smaller than the sum of its proper divisors (3753282216).

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

2145211224 is a wasteful number, since it uses less digits than its factorization.

2145211224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146360 (or 146356 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 2145211224 is about 46316.4249915729. The cubic root of 2145211224 is about 1289.7039209925.

Adding to 2145211224 its reverse (4221125412), we get a palindrome (6366336636).

The spelling of 2145211224 in words is "two billion, one hundred forty-five million, two hundred eleven thousand, two hundred twenty-four".