1011025021201 has 24 divisors (see below), whose sum is σ = 1134780663744. Its totient is φ = 895240503360.

The previous prime is 1011025021187. The next prime is 1011025021261. The reversal of 1011025021201 is 1021205201101.

It is not a de Polignac number, because 1011025021201 - 2⁵ = 1011025021169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011025021261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 863526 + ... + 1663648.

It is an arithmetic number, because the mean of its divisors is an integer number (47282527656).

Almost surely, 2^{1011025021201} is an apocalyptic number.

It is an amenable number.

1011025021201 is a deficient number, since it is larger than the sum of its proper divisors (123755642543).

1011025021201 is an equidigital number, since it uses as much as digits as its factorization.

1011025021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800281 (or 800244 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The spelling of 1011025021201 in words is "one trillion, eleven billion, twenty-five million, twenty-one thousand, two hundred one".