1011121021210 has 32 divisors (see below), whose sum is σ = 1927245130560. Its totient is φ = 380624255232.

The previous prime is 1011121021181. The next prime is 1011121021223. The reversal of 1011121021210 is 121201211101.

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, 1749957 + ... + 2254903.

It is an arithmetic number, because the mean of its divisors is an integer number (60226410330).

Almost surely, 2^{1011121021210} is an apocalyptic number.

1011121021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011121021210 is a deficient number, since it is larger than the sum of its proper divisors (916124109350).

1011121021210 is a wasteful number, since it uses less digits than its factorization.

1011121021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516750.

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

Adding to 1011121021210 its reverse (121201211101), we get a palindrome (1132322232311).

The spelling of 1011121021210 in words is "one trillion, eleven billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".