20022220212 has 24 divisors (see below), whose sum is σ = 46761132096. Its totient is φ = 6667985088.

The previous prime is 20022220193. The next prime is 20022220213. The reversal of 20022220212 is 21202222002.

It is a junction number, because it is equal to n+sod(n) for n = 20022220191 and 20022220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022220213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747328 + ... + 773655.

It is an arithmetic number, because the mean of its divisors is an integer number (1948380504).

Almost surely, 2^20022220212 is an apocalyptic number.

It is an amenable number.

20022220212 is an abundant number, since it is smaller than the sum of its proper divisors (26738911884).

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

20022220212 is a wasteful number, since it uses less digits than its factorization.

20022220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522087 (or 1522085 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20022220212 its reverse (21202222002), we get a palindrome (41224442214).

The spelling of 20022220212 in words is "twenty billion, twenty-two million, two hundred twenty thousand, two hundred twelve".