20220212 has 6 divisors (see below), whose sum is σ = 35385378. Its totient is φ = 10110104.

The previous prime is 20220173. The next prime is 20220217. The reversal of 20220212 is 21202202.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 5134756 = 3884^2 + 2266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20220193 and 20220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527523 + ... + 2527530.

It is an arithmetic number, because the mean of its divisors is an integer number (5897563).

Almost surely, 2^20220212 is an apocalyptic number.

It is an amenable number.

20220212 is a deficient number, since it is larger than the sum of its proper divisors (15165166).

20220212 is a wasteful number, since it uses less digits than its factorization.

20220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055057 (or 5055055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20220212 is about 4496.6890041452. The cubic root of 20220212 is about 272.4343729962.

Adding to 20220212 its reverse (21202202), we get a palindrome (41422414).

The spelling of 20220212 in words is "twenty million, two hundred twenty thousand, two hundred twelve".