1210100222621 has 2 divisors, whose sum is σ = 1210100222622. Its totient is φ = 1210100222620.

The previous prime is 1210100222603. The next prime is 1210100222627. The reversal of 1210100222621 is 1262220010121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 882556908025 + 327543314596 = 939445^2 + 572314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210100222621 - 2¹⁸ = 1210099960477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210100222593 and 1210100222602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210100222627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605050111310 + 605050111311.

It is an arithmetic number, because the mean of its divisors is an integer number (605050111311).

Almost surely, 2^{1210100222621} is an apocalyptic number.

It is an amenable number.

1210100222621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210100222621 is an equidigital number, since it uses as much as digits as its factorization.

1210100222621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1210100222621 its reverse (1262220010121), we get a palindrome (2472320232742).

The spelling of 1210100222621 in words is "one trillion, two hundred ten billion, one hundred million, two hundred twenty-two thousand, six hundred twenty-one".