20011202211222 has 48 divisors (see below), whose sum is σ = 44626871208192. Its totient is φ = 6475917962880.

The previous prime is 20011202211181. The next prime is 20011202211227. The reversal of 20011202211222 is 22211220211002.

It is a happy number.

20011202211222 is a `hidden beast` number, since 20 + 0 + 11 + 202 + 211 + 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 = 20011202211195 and 20011202211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011202211227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32569654 + ... + 33178377.

It is an arithmetic number, because the mean of its divisors is an integer number (929726483504).

Almost surely, 2^{20011202211222} is an apocalyptic number.

20011202211222 is an abundant number, since it is smaller than the sum of its proper divisors (24615668996970).

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

20011202211222 is a wasteful number, since it uses less digits than its factorization.

20011202211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65748533 (or 65748530 counting only the distinct ones).

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

Adding to 20011202211222 its reverse (22211220211002), we get a palindrome (42222422422224).

The spelling of 20011202211222 in words is "twenty trillion, eleven billion, two hundred two million, two hundred eleven thousand, two hundred twenty-two".