1012000011021 has 24 divisors (see below), whose sum is σ = 1547854349184. Its totient is φ = 634943629440.

The previous prime is 1012000010999. The next prime is 1012000011023. The reversal of 1012000011021 is 1201100002101.

It is a happy number.

It is not a de Polignac number, because 1012000011021 - 2²³ = 1011991622413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1012000010994 and 1012000011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012000011023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2590986 + ... + 2955876.

It is an arithmetic number, because the mean of its divisors is an integer number (64493931216).

Almost surely, 2^{1012000011021} is an apocalyptic number.

It is an amenable number.

1012000011021 is a deficient number, since it is larger than the sum of its proper divisors (535854338163).

1012000011021 is a wasteful number, since it uses less digits than its factorization.

1012000011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383041 (or 383038 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1012000011021 its reverse (1201100002101), we get a palindrome (2213100013122).

The spelling of 1012000011021 in words is "one trillion, twelve billion, eleven thousand, twenty-one".