20000010122021 has 8 divisors (see below), whose sum is σ = 20755766821080. Its totient is φ = 19248660168192.

The previous prime is 20000010121997. The next prime is 20000010122069. The reversal of 20000010122021 is 12022101000002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 488230600225 + 19511779521796 = 698735^2 + 4417214^2 .

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 20000010122021 - 2²² = 20000005927717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000010121993 and 20000010122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000010122321) 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, 1101677060 + ... + 1101695213.

It is an arithmetic number, because the mean of its divisors is an integer number (2594470852635).

Almost surely, 2^{20000010122021} is an apocalyptic number.

It is an amenable number.

20000010122021 is a deficient number, since it is larger than the sum of its proper divisors (755756699059).

20000010122021 is a wasteful number, since it uses less digits than its factorization.

20000010122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203372615.

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

Adding to 20000010122021 its reverse (12022101000002), we get a palindrome (32022111122023).

The spelling of 20000010122021 in words is "twenty trillion, ten million, one hundred twenty-two thousand, twenty-one".