20222121001211 has 4 divisors (see below), whose sum is σ = 21411657530712. Its totient is φ = 19032584471712.

The previous prime is 20222121001189. The next prime is 20222121001231. The reversal of 20222121001211 is 11210012122202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20222121001211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1189536529483 = 20222121001211 / (2 + 0 + 2 + 2 + 2 + 1 + 2 + 1 + 0 + 0 + 1 + 2 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20222121001211.

It is not an unprimeable number, because it can be changed into a prime (20222121001231) 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, 594768264725 + ... + 594768264758.

It is an arithmetic number, because the mean of its divisors is an integer number (5352914382678).

Almost surely, 2^{20222121001211} is an apocalyptic number.

20222121001211 is a deficient number, since it is larger than the sum of its proper divisors (1189536529501).

20222121001211 is a wasteful number, since it uses less digits than its factorization.

20222121001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189536529500.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20222121001211 its reverse (11210012122202), we get a palindrome (31432133123413).

The spelling of 20222121001211 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, one thousand, two hundred eleven".