1012211101 has 12 divisors (see below), whose sum is σ = 1148490112. Its totient is φ = 890505000.

The previous prime is 1012211051. The next prime is 1012211107. The reversal of 1012211101 is 1011122101.

It is not a de Polignac number, because 1012211101 - 2¹⁷ = 1012080029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012211107) 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 11 ways as a sum of consecutive naturals, for example, 131175 + ... + 138676.

Almost surely, 2^1012211101 is an apocalyptic number.

1012211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012211101 is a deficient number, since it is larger than the sum of its proper divisors (136279011).

1012211101 is a wasteful number, since it uses less digits than its factorization.

1012211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269904 (or 269893 counting only the distinct ones).

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

The square root of 1012211101 is about 31815.2652197023. The cubic root of 1012211101 is about 1004.0539106013.

Adding to 1012211101 its reverse (1011122101), we get a palindrome (2023333202).

The spelling of 1012211101 in words is "one billion, twelve million, two hundred eleven thousand, one hundred one".