1211112010 has 32 divisors (see below), whose sum is σ = 2232489600. Its totient is φ = 472874688.

The previous prime is 1211111981. The next prime is 1211112017. The reversal of 1211112010 is 102111121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1211112017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99729 + ... + 111211.

It is an arithmetic number, because the mean of its divisors is an integer number (69765300).

Almost surely, 2^1211112010 is an apocalyptic number.

1211112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211112010 is a deficient number, since it is larger than the sum of its proper divisors (1021377590).

1211112010 is a wasteful number, since it uses less digits than its factorization.

1211112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11742.

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

The square root of 1211112010 is about 34801.0346110572. The cubic root of 1211112010 is about 1065.9285721741.

Adding to 1211112010 its reverse (102111121), we get a palindrome (1313223131).

The spelling of 1211112010 in words is "one billion, two hundred eleven million, one hundred twelve thousand, ten".