20221001212 has 12 divisors (see below), whose sum is σ = 35389768176. Its totient is φ = 10109638880.

The previous prime is 20221001201. The next prime is 20221001221. The reversal of 20221001212 is 21210012202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20221001192 and 20221001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161113 + ... + 257680.

It is an arithmetic number, because the mean of its divisors is an integer number (2949147348).

Almost surely, 2^20221001212 is an apocalyptic number.

It is an amenable number.

20221001212 is a deficient number, since it is larger than the sum of its proper divisors (15168766964).

20221001212 is a wasteful number, since it uses less digits than its factorization.

20221001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430868 (or 430866 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20221001212 its reverse (21210012202), we get a palindrome (41431013414).

The spelling of 20221001212 in words is "twenty billion, two hundred twenty-one million, one thousand, two hundred twelve".