1020120211 has 16 divisors (see below), whose sum is σ = 1152771840. Its totient is φ = 894206880.

The previous prime is 1020120197. The next prime is 1020120247. The reversal of 1020120211 is 1120210201.

It is not a de Polignac number, because 1020120211 - 2⁷ = 1020120083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020120251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306820 + ... + 310126.

It is an arithmetic number, because the mean of its divisors is an integer number (72048240).

Almost surely, 2^1020120211 is an apocalyptic number.

1020120211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020120211 is a deficient number, since it is larger than the sum of its proper divisors (132651629).

1020120211 is a wasteful number, since it uses less digits than its factorization.

1020120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1020120211 is about 31939.3207661027. The cubic root of 1020120211 is about 1006.6622528180.

Adding to 1020120211 its reverse (1120210201), we get a palindrome (2140330412).

The spelling of 1020120211 in words is "one billion, twenty million, one hundred twenty thousand, two hundred eleven".