10101220212 has 24 divisors (see below), whose sum is σ = 23605960896. Its totient is φ = 3361866688.

The previous prime is 10101220163. The next prime is 10101220219. The reversal of 10101220212 is 21202210101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101220219) 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, 642753 + ... + 658280.

It is an arithmetic number, because the mean of its divisors is an integer number (983581704).

Almost surely, 2^10101220212 is an apocalyptic number.

10101220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10101220212 is an abundant number, since it is smaller than the sum of its proper divisors (13504740684).

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

10101220212 is a wasteful number, since it uses less digits than its factorization.

10101220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301687 (or 1301685 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10101220212 its reverse (21202210101), we get a palindrome (31303430313).

The spelling of 10101220212 in words is "ten billion, one hundred one million, two hundred twenty thousand, two hundred twelve".