1020012112011 has 4 divisors (see below), whose sum is σ = 1360016149352. Its totient is φ = 680008074672.

The previous prime is 1020012111997. The next prime is 1020012112033. The reversal of 1020012112011 is 1102112100201.

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

It is not a de Polignac number, because 1020012112011 - 2²² = 1020007917707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020012112081) 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, 170002018666 + ... + 170002018671.

It is an arithmetic number, because the mean of its divisors is an integer number (340004037338).

Almost surely, 2^{1020012112011} is an apocalyptic number.

1020012112011 is a deficient number, since it is larger than the sum of its proper divisors (340004037341).

1020012112011 is an equidigital number, since it uses as much as digits as its factorization.

1020012112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340004037340.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020012112011 its reverse (1102112100201), we get a palindrome (2122124212212).

The spelling of 1020012112011 in words is "one trillion, twenty billion, twelve million, one hundred twelve thousand, eleven".