20102201212 has 12 divisors (see below), whose sum is σ = 35202973960. Its totient is φ = 10044208656.

The previous prime is 20102201183. The next prime is 20102201213. The reversal of 20102201212 is 21210220102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102201192 and 20102201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102201213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716423 + ... + 1728094.

Almost surely, 2^20102201212 is an apocalyptic number.

It is an amenable number.

20102201212 is a deficient number, since it is larger than the sum of its proper divisors (15100772748).

20102201212 is a wasteful number, since it uses less digits than its factorization.

20102201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445980 (or 3445978 counting only the distinct ones).

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

Adding to 20102201212 its reverse (21210220102), we get a palindrome (41312421314).

The spelling of 20102201212 in words is "twenty billion, one hundred two million, two hundred one thousand, two hundred twelve".