20212212222 has 48 divisors (see below), whose sum is σ = 44998203120. Its totient is φ = 6552182016.

The previous prime is 20212212211. The next prime is 20212212233. The reversal of 20212212222 is 22221221202.

20212212222 is a `hidden beast` number, since 20 + 212 + 212 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (20212212211) and next prime (20212212233).

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 = 20212212195 and 20212212204.

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, 1684998 + ... + 1696950.

It is an arithmetic number, because the mean of its divisors is an integer number (937462565).

Almost surely, 2^20212212222 is an apocalyptic number.

20212212222 is an abundant number, since it is smaller than the sum of its proper divisors (24785990898).

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

20212212222 is a wasteful number, since it uses less digits than its factorization.

20212212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14537 (or 14534 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20212212222 its reverse (22221221202), we get a palindrome (42433433424).

The spelling of 20212212222 in words is "twenty billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty-two".