20022201212021 has 8 divisors (see below), whose sum is σ = 20712908374200. Its totient is φ = 19331513145280.

The previous prime is 20022201211997. The next prime is 20022201212051. The reversal of 20022201212021 is 12021210222002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9156040551025 + 10866160660996 = 3025895^2 + 3296386^2 .

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 20022201212021 - 2¹⁴ = 20022201195637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022201212051) 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, 2624210 + ... + 6850611.

It is an arithmetic number, because the mean of its divisors is an integer number (2589113546775).

Almost surely, 2^{20022201212021} is an apocalyptic number.

It is an amenable number.

20022201212021 is a deficient number, since it is larger than the sum of its proper divisors (690707162179).

20022201212021 is an equidigital number, since it uses as much as digits as its factorization.

20022201212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9547719.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20022201212021 its reverse (12021210222002), we get a palindrome (32043411434023).

The spelling of 20022201212021 in words is "twenty trillion, twenty-two billion, two hundred one million, two hundred twelve thousand, twenty-one".