20212211312122 has 4 divisors (see below), whose sum is σ = 30318316968186. Its totient is φ = 10106105656060.

The previous prime is 20212211312107. The next prime is 20212211312129. The reversal of 20212211312122 is 22121311221202.

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

It can be written as a sum of positive squares in only one way, i.e., 20184541983841 + 27669328281 = 4492721^2 + 166341^2 .

It is a super-2 number, since 2×20212211312122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212211312093 and 20212211312102.

It is not an unprimeable number, because it can be changed into a prime (20212211312129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053052828029 + ... + 5053052828032.

Almost surely, 2^{20212211312122} is an apocalyptic number.

20212211312122 is a deficient number, since it is larger than the sum of its proper divisors (10106105656064).

20212211312122 is a wasteful number, since it uses less digits than its factorization.

20212211312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106105656063.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 20212211312122 its reverse (22121311221202), we get a palindrome (42333522533324).

The spelling of 20212211312122 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, three hundred twelve thousand, one hundred twenty-two".