21233020224146 has 8 divisors (see below), whose sum is σ = 32131384587324. Its totient is φ = 10522558695040.

The previous prime is 21233020224137. The next prime is 21233020224149. The reversal of 21233020224146 is 64142202033212.

It can be written as a sum of positive squares in 2 ways, for example, as 18908191206025 + 2324829018121 = 4348355^2 + 1524739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21233020224146² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21233020224149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46975708235 + ... + 46975708686.

Almost surely, 2^{21233020224146} is an apocalyptic number.

21233020224146 is a deficient number, since it is larger than the sum of its proper divisors (10898364363178).

21233020224146 is a wasteful number, since it uses less digits than its factorization.

21233020224146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93951417036.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21233020224146 its reverse (64142202033212), we get a palindrome (85375222257358).

The spelling of 21233020224146 in words is "twenty-one trillion, two hundred thirty-three billion, twenty million, two hundred twenty-four thousand, one hundred forty-six".