1011020012201 has 4 divisors (see below), whose sum is σ = 1034532105552. Its totient is φ = 987507918852.

The previous prime is 1011020012161. The next prime is 1011020012209. The reversal of 1011020012201 is 1022100201101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011020012201 is a prime.

It is a super-2 number, since 2×1011020012201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011020012209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11756046611 + ... + 11756046696.

It is an arithmetic number, because the mean of its divisors is an integer number (258633026388).

Almost surely, 2^{1011020012201} is an apocalyptic number.

It is an amenable number.

1011020012201 is a deficient number, since it is larger than the sum of its proper divisors (23512093351).

1011020012201 is an equidigital number, since it uses as much as digits as its factorization.

1011020012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23512093350.

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

Adding to 1011020012201 its reverse (1022100201101), we get a palindrome (2033120213302).

The spelling of 1011020012201 in words is "one trillion, eleven billion, twenty million, twelve thousand, two hundred one".