1020120101011 has 4 divisors (see below), whose sum is σ = 1112858292024. Its totient is φ = 927381910000.

The previous prime is 1020120100991. The next prime is 1020120101029. The reversal of 1020120101011 is 1101010210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020120101011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020120101051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46369095490 + ... + 46369095511.

It is an arithmetic number, because the mean of its divisors is an integer number (278214573006).

Almost surely, 2^{1020120101011} is an apocalyptic number.

1020120101011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020120101011 is a deficient number, since it is larger than the sum of its proper divisors (92738191013).

1020120101011 is an equidigital number, since it uses as much as digits as its factorization.

1020120101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92738191012.

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

Adding to 1020120101011 its reverse (1101010210201), we get a palindrome (2121130311212).

The spelling of 1020120101011 in words is "one trillion, twenty billion, one hundred twenty million, one hundred one thousand, eleven".