10021221202212 has 72 divisors (see below), whose sum is σ = 28381149031872. Its totient is φ = 2954659809600.

The previous prime is 10021221202211. The next prime is 10021221202259. The reversal of 10021221202212 is 21220212212001.

It is a happy number.

10021221202212 is a `hidden beast` number, since 10 + 0 + 21 + 221 + 202 + 212 = 666.

10021221202212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10021221202211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341959864 + ... + 341989167.

Almost surely, 2^{10021221202212} is an apocalyptic number.

10021221202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021221202212 is an abundant number, since it is smaller than the sum of its proper divisors (18359927829660).

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

10021221202212 is a wasteful number, since it uses less digits than its factorization.

10021221202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683949089 (or 683949084 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10021221202212 its reverse (21220212212001), we get a palindrome (31241433414213).

The spelling of 10021221202212 in words is "ten trillion, twenty-one billion, two hundred twenty-one million, two hundred two thousand, two hundred twelve".