21224144142212 has 48 divisors (see below), whose sum is σ = 40923755216064. Its totient is φ = 9550942800000.

The previous prime is 21224144142197. The next prime is 21224144142251.

21224144142212 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

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, 49439087 + ... + 49866537.

It is an arithmetic number, because the mean of its divisors is an integer number (852578233668).

Almost surely, 2^{21224144142212} is an apocalyptic number.

21224144142212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21224144142212 is a deficient number, since it is larger than the sum of its proper divisors (19699611073852).

21224144142212 is a wasteful number, since it uses less digits than its factorization.

21224144142212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438740 (or 438738 counting only the distinct ones).

The product of its digits is 16384, while the sum is 32.

It can be divided in two parts, 2122414 and 4142212, that added together give a palindrome (6264626).

The spelling of 21224144142212 in words is "twenty-one trillion, two hundred twenty-four billion, one hundred forty-four million, one hundred forty-two thousand, two hundred twelve".