1012021221011 has 4 divisors (see below), whose sum is σ = 1012172886792. Its totient is φ = 1011869555232.

The previous prime is 1012021220971. The next prime is 1012021221023. The reversal of 1012021221011 is 1101221202101.

1012021221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1012021221011 - 2²² = 1012017026707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012021221311) 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, 75822881 + ... + 75836226.

It is an arithmetic number, because the mean of its divisors is an integer number (253043221698).

Almost surely, 2^{1012021221011} is an apocalyptic number.

1012021221011 is a deficient number, since it is larger than the sum of its proper divisors (151665781).

1012021221011 is an equidigital number, since it uses as much as digits as its factorization.

1012021221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151665780.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012021221011 its reverse (1101221202101), we get a palindrome (2113242423112).

The spelling of 1012021221011 in words is "one trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, eleven".