1021011121210 has 16 divisors (see below), whose sum is σ = 1838025499392. Its totient is φ = 408358786000.

The previous prime is 1021011121129. The next prime is 1021011121241. The reversal of 1021011121210 is 121211101201.

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 7 ways as a sum of consecutive naturals, for example, 5613826 + ... + 5792845.

It is an arithmetic number, because the mean of its divisors is an integer number (114876593712).

Almost surely, 2^{1021011121210} is an apocalyptic number.

1021011121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021011121210 is a deficient number, since it is larger than the sum of its proper divisors (817014378182).

1021011121210 is a wasteful number, since it uses less digits than its factorization.

1021011121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415629.

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

Adding to 1021011121210 its reverse (121211101201), we get a palindrome (1142222222411).

The spelling of 1021011121210 in words is "one trillion, twenty-one billion, eleven million, one hundred twenty-one thousand, two hundred ten".