20000220121212 has 24 divisors (see below), whose sum is σ = 46669777590912. Its totient is φ = 6666368996400.

The previous prime is 20000220121201. The next prime is 20000220121213. The reversal of 20000220121212 is 21212102200002.

It is a junction number, because it is equal to n+sod(n) for n = 20000220121191 and 20000220121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000220121213) 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, 46155864 + ... + 46587167.

It is an arithmetic number, because the mean of its divisors is an integer number (1944574066288).

Almost surely, 2^{20000220121212} is an apocalyptic number.

It is an amenable number.

20000220121212 is an abundant number, since it is smaller than the sum of its proper divisors (26669557469700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20000220121212 is a wasteful number, since it uses less digits than its factorization.

20000220121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92761009 (or 92761007 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20000220121212 its reverse (21212102200002), we get a palindrome (41212322321214).

The spelling of 20000220121212 in words is "twenty trillion, two hundred twenty million, one hundred twenty-one thousand, two hundred twelve".