20211022011222 has 80 divisors (see below), whose sum is σ = 51856670001312. Its totient is φ = 5763493906560.

The previous prime is 20211022011221. The next prime is 20211022011233. The reversal of 20211022011222 is 22211022011202.

It is a happy number.

20211022011222 is a `hidden beast` number, since 2 + 0 + 211 + 0 + 220 + 11 + 222 = 666.

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 = 20211022011195 and 20211022011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211022011221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16513573 + ... + 17695200.

Almost surely, 2^{20211022011222} is an apocalyptic number.

20211022011222 is an abundant number, since it is smaller than the sum of its proper divisors (31645647990090).

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

20211022011222 is a wasteful number, since it uses less digits than its factorization.

20211022011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34209315 (or 34209306 counting only the distinct ones).

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

Adding to 20211022011222 its reverse (22211022011202), we get a palindrome (42422044022424).

The spelling of 20211022011222 in words is "twenty trillion, two hundred eleven billion, twenty-two million, eleven thousand, two hundred twenty-two".