20211012221122 has 8 divisors (see below), whose sum is σ = 30316600587276. Its totient is φ = 10105478692032.

The previous prime is 20211012221107. The next prime is 20211012221131. The reversal of 20211012221122 is 22112221011202.

It can be written as a sum of positive squares in 2 ways, for example, as 18671896567801 + 1539115653321 = 4321099^2 + 1240611^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20211012221122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12775123 + ... + 14269750.

Almost surely, 2^{20211012221122} is an apocalyptic number.

20211012221122 is a deficient number, since it is larger than the sum of its proper divisors (10105588366154).

20211012221122 is a wasteful number, since it uses less digits than its factorization.

20211012221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27418532.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20211012221122 its reverse (22112221011202), we get a palindrome (42323233232324).

The spelling of 20211012221122 in words is "twenty trillion, two hundred eleven billion, twelve million, two hundred twenty-one thousand, one hundred twenty-two".