20211112112122 has 32 divisors (see below), whose sum is σ = 31381321708800. Its totient is φ = 9751101181248.

The previous prime is 20211112112071. The next prime is 20211112112131. The reversal of 20211112112122 is 22121121111202.

It is a happy number.

It is a super-2 number, since 2×20211112112122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20211112112122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819611829 + ... + 819636487.

It is an arithmetic number, because the mean of its divisors is an integer number (980666303400).

Almost surely, 2^{20211112112122} is an apocalyptic number.

20211112112122 is a deficient number, since it is larger than the sum of its proper divisors (11170209596678).

20211112112122 is a wasteful number, since it uses less digits than its factorization.

20211112112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32790.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 20211112112122 its reverse (22121121111202), we get a palindrome (42332233223324).

The spelling of 20211112112122 in words is "twenty trillion, two hundred eleven billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty-two".