1012010111021 has 12 divisors (see below), whose sum is σ = 1252394593632. Its totient is φ = 800711295696.

The previous prime is 1012010111003. The next prime is 1012010111033. The reversal of 1012010111021 is 1201110102101.

It is not a de Polignac number, because 1012010111021 - 2¹⁰ = 1012010109997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012010110993 and 1012010111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012010111071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 427729211 + ... + 427731576.

It is an arithmetic number, because the mean of its divisors is an integer number (104366216136).

Almost surely, 2^{1012010111021} is an apocalyptic number.

It is an amenable number.

1012010111021 is a deficient number, since it is larger than the sum of its proper divisors (240384482611).

1012010111021 is an equidigital number, since it uses as much as digits as its factorization.

1012010111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855460820 (or 855460807 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1012010111021 its reverse (1201110102101), we get a palindrome (2213120213122).

The spelling of 1012010111021 in words is "one trillion, twelve billion, ten million, one hundred eleven thousand, twenty-one".