1212011121010 has 32 divisors (see below), whose sum is σ = 2185030028160. Its totient is φ = 484047188352.

The previous prime is 1212011121001. The next prime is 1212011121023. The reversal of 1212011121010 is 101211102121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19524201 + ... + 19586179.

It is an arithmetic number, because the mean of its divisors is an integer number (68282188380).

Almost surely, 2^{1212011121010} is an apocalyptic number.

1212011121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212011121010 is a deficient number, since it is larger than the sum of its proper divisors (973018907150).

1212011121010 is a wasteful number, since it uses less digits than its factorization.

1212011121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65010.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212011121010 its reverse (101211102121), we get a palindrome (1313222223131).

The spelling of 1212011121010 in words is "one trillion, two hundred twelve billion, eleven million, one hundred twenty-one thousand, ten".