20001010022222 has 4 divisors (see below), whose sum is σ = 30001515033336. Its totient is φ = 10000505011110.

The previous prime is 20001010022221. The next prime is 20001010022239. The reversal of 20001010022222 is 22222001010002.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20001010022197 and 20001010022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001010022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000252505554 + ... + 5000252505557.

It is an arithmetic number, because the mean of its divisors is an integer number (7500378758334).

Almost surely, 2^{20001010022222} is an apocalyptic number.

20001010022222 is a deficient number, since it is larger than the sum of its proper divisors (10000505011114).

20001010022222 is a wasteful number, since it uses less digits than its factorization.

20001010022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000505011113.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20001010022222 its reverse (22222001010002), we get a palindrome (42223011032224).

The spelling of 20001010022222 in words is "twenty trillion, one billion, ten million, twenty-two thousand, two hundred twenty-two".