20001210122212 has 24 divisors (see below), whose sum is σ = 38297434462560. Its totient is φ = 9064481516160.

The previous prime is 20001210122203. The next prime is 20001210122219. The reversal of 20001210122212 is 21222101210002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20001210122219) 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, 674425762 + ... + 674455417.

It is an arithmetic number, because the mean of its divisors is an integer number (1595726435940).

Almost surely, 2^{20001210122212} is an apocalyptic number.

20001210122212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20001210122212 is a deficient number, since it is larger than the sum of its proper divisors (18296224340348).

20001210122212 is a wasteful number, since it uses less digits than its factorization.

20001210122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348881531 (or 1348881529 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20001210122212 its reverse (21222101210002), we get a palindrome (41223311332214).

The spelling of 20001210122212 in words is "twenty trillion, one billion, two hundred ten million, one hundred twenty-two thousand, two hundred twelve".