1012211011 has 4 divisors (see below), whose sum is σ = 1156812592. Its totient is φ = 867609432.

The previous prime is 1012210987. The next prime is 1012211027. The reversal of 1012211011 is 1101122101.

1012211011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101122101 = 761 ⋅1446941.

It is a cyclic number.

It is not a de Polignac number, because 1012211011 - 2⁹ = 1012210499 is a prime.

It is a super-2 number, since 2×1012211011² = 2049142261579284242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012211051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72300780 + ... + 72300793.

It is an arithmetic number, because the mean of its divisors is an integer number (289203148).

Almost surely, 2^1012211011 is an apocalyptic number.

1012211011 is a deficient number, since it is larger than the sum of its proper divisors (144601581).

1012211011 is an equidigital number, since it uses as much as digits as its factorization.

1012211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144601580.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1012211011 is about 31815.2638052869. The cubic root of 1012211011 is about 1004.0538808430.

Adding to 1012211011 its reverse (1101122101), we get a palindrome (2113333112).

The spelling of 1012211011 in words is "one billion, twelve million, two hundred eleven thousand, eleven".