10012000022021 has 4 divisors (see below), whose sum is σ = 10034298463500. Its totient is φ = 9989701580544.

The previous prime is 10012000021979. The next prime is 10012000022159. The reversal of 10012000022021 is 12022000021001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3593352436996 + 6418647585025 = 1895614^2 + 2533505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10012000022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012000021993 and 10012000022011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012008022021) 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, 11149220066 + ... + 11149220963.

It is an arithmetic number, because the mean of its divisors is an integer number (2508574615875).

Almost surely, 2^{10012000022021} is an apocalyptic number.

It is an amenable number.

10012000022021 is a deficient number, since it is larger than the sum of its proper divisors (22298441479).

10012000022021 is an equidigital number, since it uses as much as digits as its factorization.

10012000022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22298441478.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10012000022021 its reverse (12022000021001), we get a palindrome (22034000043022).

The spelling of 10012000022021 in words is "ten trillion, twelve billion, twenty-two thousand, twenty-one".