20001022224 has 20 divisors (see below), whose sum is σ = 51669307536. Its totient is φ = 6667007392.

The previous prime is 20001022213. The next prime is 20001022297. The reversal of 20001022224 is 42222010002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208343934 + ... + 208344029.

Almost surely, 2^20001022224 is an apocalyptic number.

20001022224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20001022224 is an abundant number, since it is smaller than the sum of its proper divisors (31668285312).

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

20001022224 is a wasteful number, since it uses less digits than its factorization.

20001022224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416687974 (or 416687968 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20001022224 its reverse (42222010002), we get a palindrome (62223032226).

The spelling of 20001022224 in words is "twenty billion, one million, twenty-two thousand, two hundred twenty-four".