20001100221212 has 12 divisors (see below), whose sum is σ = 38183918604216. Its totient is φ = 9091409191440.

The previous prime is 20001100221203. The next prime is 20001100221317. The reversal of 20001100221212 is 21212200110002.

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, 227285229743 + ... + 227285229830.

It is an arithmetic number, because the mean of its divisors is an integer number (3181993217018).

Almost surely, 2^{20001100221212} is an apocalyptic number.

20001100221212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20001100221212 is a deficient number, since it is larger than the sum of its proper divisors (18182818383004).

20001100221212 is a wasteful number, since it uses less digits than its factorization.

20001100221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454570459588 (or 454570459586 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001100221212 its reverse (21212200110002), we get a palindrome (41213300331214).

The spelling of 20001100221212 in words is "twenty trillion, one billion, one hundred million, two hundred twenty-one thousand, two hundred twelve".