20122001212 has 24 divisors (see below), whose sum is σ = 36050742000. Its totient is φ = 9824078976.

The previous prime is 20122001183. The next prime is 20122001213. The reversal of 20122001212 is 21210022102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20122001192 and 20122001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122001213) 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, 250953 + ... + 321280.

It is an arithmetic number, because the mean of its divisors is an integer number (1502114250).

Almost surely, 2^20122001212 is an apocalyptic number.

It is an amenable number.

20122001212 is a deficient number, since it is larger than the sum of its proper divisors (15928740788).

20122001212 is a wasteful number, since it uses less digits than its factorization.

20122001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572445 (or 572443 counting only the distinct ones).

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

Adding to 20122001212 its reverse (21210022102), we get a palindrome (41332023314).

The spelling of 20122001212 in words is "twenty billion, one hundred twenty-two million, one thousand, two hundred twelve".