1011010223021 has 4 divisors (see below), whose sum is σ = 1011012267072. Its totient is φ = 1011008178972.

The previous prime is 1011010223017. The next prime is 1011010223039. The reversal of 1011010223021 is 1203220101101.

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 not a de Polignac number, because 1011010223021 - 2² = 1011010223017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011010222987 and 1011010223005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011010223521) 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, 236366 + ... + 1441488.

It is an arithmetic number, because the mean of its divisors is an integer number (252753066768).

Almost surely, 2^{1011010223021} is an apocalyptic number.

It is an amenable number.

1011010223021 is a deficient number, since it is larger than the sum of its proper divisors (2044051).

1011010223021 is an equidigital number, since it uses as much as digits as its factorization.

1011010223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044050.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1011010223021 its reverse (1203220101101), we get a palindrome (2214230324122).

The spelling of 1011010223021 in words is "one trillion, eleven billion, ten million, two hundred twenty-three thousand, twenty-one".