1210100211 has 12 divisors (see below), whose sum is σ = 1785112992. Its totient is φ = 789568656.

The previous prime is 1210100209. The next prime is 1210100237. The reversal of 1210100211 is 1120010121.

It is a happy number.

It is not a de Polignac number, because 1210100211 - 2¹ = 1210100209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1210100193 and 1210100202.

It is not an unprimeable number, because it can be changed into a prime (1210100251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1429956 + ... + 1430801.

It is an arithmetic number, because the mean of its divisors is an integer number (148759416).

Almost surely, 2^1210100211 is an apocalyptic number.

1210100211 is a deficient number, since it is larger than the sum of its proper divisors (575012781).

1210100211 is a wasteful number, since it uses less digits than its factorization.

1210100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860810 (or 2860807 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1210100211 is about 34786.4946638778. The cubic root of 1210100211 is about 1065.6316533280.

Adding to 1210100211 its reverse (1120010121), we get a palindrome (2330110332).

The spelling of 1210100211 in words is "one billion, two hundred ten million, one hundred thousand, two hundred eleven".