22121212010022 has 48 divisors (see below), whose sum is σ = 49102932191040. Its totient is φ = 7193211350400.

The previous prime is 22121212009999. The next prime is 22121212010077. The reversal of 22121212010022 is 22001021212122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22121212009977 and 22121212010004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6442872 + ... + 9260292.

It is an arithmetic number, because the mean of its divisors is an integer number (1022977753980).

Almost surely, 2^{22121212010022} is an apocalyptic number.

22121212010022 is an abundant number, since it is smaller than the sum of its proper divisors (26981720181018).

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

22121212010022 is a wasteful number, since it uses less digits than its factorization.

22121212010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828109 (or 2828106 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22121212010022 its reverse (22001021212122), we get a palindrome (44122233222144).

The spelling of 22121212010022 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, ten thousand, twenty-two".