10212101222220 has 72 divisors (see below), whose sum is σ = 30977011761696. Its totient is φ = 2723200204032.

The previous prime is 10212101222159. The next prime is 10212101222249. The reversal of 10212101222220 is 2222210121201.

It is a happy number.

10212101222220 is a `hidden beast` number, since 1 + 0 + 212 + 10 + 1 + 222 + 220 = 666.

It is a super-2 number, since 2×10212101222220² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 10212101222193 and 10212101222202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23848929 + ... + 24273351.

It is an arithmetic number, because the mean of its divisors is an integer number (430236274468).

Almost surely, 2^{10212101222220} is an apocalyptic number.

10212101222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212101222220 is an abundant number, since it is smaller than the sum of its proper divisors (20764910539476).

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

10212101222220 is a wasteful number, since it uses less digits than its factorization.

10212101222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558111 (or 558106 counting only the distinct ones).

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

Adding to 10212101222220 its reverse (2222210121201), we get a palindrome (12434311343421).

The spelling of 10212101222220 in words is "ten trillion, two hundred twelve billion, one hundred one million, two hundred twenty-two thousand, two hundred twenty".