1012021002011 has 4 divisors (see below), whose sum is σ = 1031115737952. Its totient is φ = 992926266072.

The previous prime is 1012021001939. The next prime is 1012021002017. The reversal of 1012021002011 is 1102001202101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012021002011 - 2¹⁸ = 1012020739867 is a prime.

It is a super-2 number, since 2×1012021002011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012021001983 and 1012021002001.

It is not an unprimeable number, because it can be changed into a prime (1012021002017) 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, 9547367891 + ... + 9547367996.

It is an arithmetic number, because the mean of its divisors is an integer number (257778934488).

Almost surely, 2^{1012021002011} is an apocalyptic number.

1012021002011 is a deficient number, since it is larger than the sum of its proper divisors (19094735941).

1012021002011 is an equidigital number, since it uses as much as digits as its factorization.

1012021002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19094735940.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1012021002011 its reverse (1102001202101), we get a palindrome (2114022204112).

The spelling of 1012021002011 in words is "one trillion, twelve billion, twenty-one million, two thousand, eleven".