10211210221220 has 24 divisors (see below), whose sum is σ = 21500120745600. Its totient is φ = 4073707082592.

The previous prime is 10211210221211. The next prime is 10211210221301. The reversal of 10211210221220 is 2212201211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673555100 + ... + 673570259.

It is an arithmetic number, because the mean of its divisors is an integer number (895838364400).

Almost surely, 2^{10211210221220} is an apocalyptic number.

10211210221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211210221220 is an abundant number, since it is smaller than the sum of its proper divisors (11288910524380).

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

10211210221220 is a wasteful number, since it uses less digits than its factorization.

10211210221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347125747 (or 1347125745 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10211210221220 its reverse (2212201211201), we get a palindrome (12423411432421).

The spelling of 10211210221220 in words is "ten trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty".