10212122220 has 24 divisors (see below), whose sum is σ = 28593942384. Its totient is φ = 2723232576.

The previous prime is 10212122131. The next prime is 10212122227. The reversal of 10212122220 is 2222121201.

It is a super-3 number, since 3×10212122220³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10212122220.

It is not an unprimeable number, because it can be changed into a prime (10212122227) 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, 85100959 + ... + 85101078.

It is an arithmetic number, because the mean of its divisors is an integer number (1191414266).

Almost surely, 2^10212122220 is an apocalyptic number.

10212122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212122220 is an abundant number, since it is smaller than the sum of its proper divisors (18381820164).

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

10212122220 is a wasteful number, since it uses less digits than its factorization.

10212122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170202049 (or 170202047 counting only the distinct ones).

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

Adding to 10212122220 its reverse (2222121201), we get a palindrome (12434243421).

The spelling of 10212122220 in words is "ten billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty".