20010111212212 has 12 divisors (see below), whose sum is σ = 38201121405216. Its totient is φ = 9095505096440.

The previous prime is 20010111212173. The next prime is 20010111212233. The reversal of 20010111212212 is 21221211101002.

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, 227387627368 + ... + 227387627455.

It is an arithmetic number, because the mean of its divisors is an integer number (3183426783768).

Almost surely, 2^{20010111212212} is an apocalyptic number.

20010111212212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20010111212212 is a deficient number, since it is larger than the sum of its proper divisors (18191010193004).

20010111212212 is a wasteful number, since it uses less digits than its factorization.

20010111212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454775254838 (or 454775254836 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20010111212212 its reverse (21221211101002), we get a palindrome (41231322313214).

The spelling of 20010111212212 in words is "twenty trillion, ten billion, one hundred eleven million, two hundred twelve thousand, two hundred twelve".