10200021121212 has 48 divisors (see below), whose sum is σ = 25772429128992. Its totient is φ = 3121128426240.

The previous prime is 10200021121177. The next prime is 10200021121219. The reversal of 10200021121212 is 21212112000201.

It is a junction number, because it is equal to n+sod(n) for n = 10200021121191 and 10200021121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200021121219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180592623 + ... + 180649094.

It is an arithmetic number, because the mean of its divisors is an integer number (536925606854).

Almost surely, 2^{10200021121212} is an apocalyptic number.

10200021121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10200021121212 is an abundant number, since it is smaller than the sum of its proper divisors (15572408007780).

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

10200021121212 is a wasteful number, since it uses less digits than its factorization.

10200021121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361241918 (or 361241916 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10200021121212 its reverse (21212112000201), we get a palindrome (31412133121413).

The spelling of 10200021121212 in words is "ten trillion, two hundred billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".