101221220210 has 48 divisors (see below), whose sum is σ = 200411584128. Its totient is φ = 36781224480.

The previous prime is 101221220207. The next prime is 101221220213. The reversal of 101221220210 is 12022122101.

It is an interprime number because it is at equal distance from previous prime (101221220207) and next prime (101221220213).

It is not an unprimeable number, because it can be changed into a prime (101221220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1692437 + ... + 1751223.

It is an arithmetic number, because the mean of its divisors is an integer number (4175241336).

Almost surely, 2^101221220210 is an apocalyptic number.

101221220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101221220210 is a deficient number, since it is larger than the sum of its proper divisors (99190363918).

101221220210 is a wasteful number, since it uses less digits than its factorization.

101221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60239 (or 60228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101221220210 its reverse (12022122101), we get a palindrome (113243342311).

The spelling of 101221220210 in words is "one hundred one billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".