22101212201020 has 12 divisors (see below), whose sum is σ = 46412545622184. Its totient is φ = 8840484880400.

The previous prime is 22101212200957. The next prime is 22101212201021. The reversal of 22101212201020 is 2010221210122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22101212200985 and 22101212201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101212201021) 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, 552530305006 + ... + 552530305045.

It is an arithmetic number, because the mean of its divisors is an integer number (3867712135182).

Almost surely, 2^{22101212201020} is an apocalyptic number.

22101212201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101212201020 is an abundant number, since it is smaller than the sum of its proper divisors (24311333421164).

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

22101212201020 is a wasteful number, since it uses less digits than its factorization.

22101212201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105060610060 (or 1105060610058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22101212201020 its reverse (2010221210122), we get a palindrome (24111433411142).

The spelling of 22101212201020 in words is "twenty-two trillion, one hundred one billion, two hundred twelve million, two hundred one thousand, twenty".