1210102011 has 20 divisors (see below), whose sum is σ = 1811515200. Its totient is φ = 805024656.

The previous prime is 1210101943. The next prime is 1210102027. The reversal of 1210102011 is 1102010121.

It is a happy number.

It is not a de Polignac number, because 1210102011 - 2⁹ = 1210101499 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 = 1210101984 and 1210102002.

It is not an unprimeable number, because it can be changed into a prime (1210102031) 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 19 ways as a sum of consecutive naturals, for example, 23205 + ... + 54393.

It is an arithmetic number, because the mean of its divisors is an integer number (90575760).

Almost surely, 2^1210102011 is an apocalyptic number.

1210102011 is a deficient number, since it is larger than the sum of its proper divisors (601413189).

1210102011 is an equidigital number, since it uses as much as digits as its factorization.

1210102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31680 (or 31671 counting only the distinct ones).

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

The square root of 1210102011 is about 34786.5205359777. The cubic root of 1210102011 is about 1065.6321816964.

Adding to 1210102011 its reverse (1102010121), we get a palindrome (2312112132).

The spelling of 1210102011 in words is "one billion, two hundred ten million, one hundred two thousand, eleven".