1211011112010 has 48 divisors (see below), whose sum is σ = 3380945312736. Its totient is φ = 276802539552.

The previous prime is 1211011111991. The next prime is 1211011112023. The reversal of 1211011112010 is 102111101121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411907072 + ... + 411910011.

It is an arithmetic number, because the mean of its divisors is an integer number (70436360682).

Almost surely, 2^{1211011112010} is an apocalyptic number.

1211011112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211011112010 is an abundant number, since it is smaller than the sum of its proper divisors (2169934200726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211011112010 is a wasteful number, since it uses less digits than its factorization.

1211011112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823817107 (or 823817100 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1211011112010 its reverse (102111101121), we get a palindrome (1313122213131).

It can be divided in two parts, 12110111 and 12010, that added together give a palindrome (12122121).

The spelling of 1211011112010 in words is "one trillion, two hundred eleven billion, eleven million, one hundred twelve thousand, ten".