1210100222221 has 16 divisors (see below), whose sum is σ = 1420676981568. Its totient is φ = 1018406419200.

The previous prime is 1210100222213. The next prime is 1210100222257. The reversal of 1210100222221 is 1222220010121.

It is a happy number.

It is not a de Polignac number, because 1210100222221 - 2³ = 1210100222213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210100222195 and 1210100222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210100222621) 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 15 ways as a sum of consecutive naturals, for example, 53030595 + ... + 53053408.

It is an arithmetic number, because the mean of its divisors is an integer number (88792311348).

Almost surely, 2^{1210100222221} is an apocalyptic number.

1210100222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210100222221 is a deficient number, since it is larger than the sum of its proper divisors (210576759347).

1210100222221 is a wasteful number, since it uses less digits than its factorization.

1210100222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106084092.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1210100222221 its reverse (1222220010121), we get a palindrome (2432320232342).

The spelling of 1210100222221 in words is "one trillion, two hundred ten billion, one hundred million, two hundred twenty-two thousand, two hundred twenty-one".