1011400223021 has 8 divisors (see below), whose sum is σ = 1011774510264. Its totient is φ = 1011026016000.

The previous prime is 1011400222919. The next prime is 1011400223063. The reversal of 1011400223021 is 1203220041101.

It can be written as a sum of positive squares in 4 ways, for example, as 376173688900 + 635226534121 = 613330^2 + 797011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011400223021 - 2³⁴ = 994220353837 is a prime.

It is a super-2 number, since 2×1011400223021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011400223321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36034025 + ... + 36062081.

It is an arithmetic number, because the mean of its divisors is an integer number (126471813783).

Almost surely, 2^{1011400223021} is an apocalyptic number.

It is an amenable number.

1011400223021 is a deficient number, since it is larger than the sum of its proper divisors (374287243).

1011400223021 is an equidigital number, since it uses as much as digits as its factorization.

1011400223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40111.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1011400223021 its reverse (1203220041101), we get a palindrome (2214620264122).

The spelling of 1011400223021 in words is "one trillion, eleven billion, four hundred million, two hundred twenty-three thousand, twenty-one".