20121111200122 has 8 divisors (see below), whose sum is σ = 31770175579200. Its totient is φ = 9531052673724.

The previous prime is 20121111200111. The next prime is 20121111200123. The reversal of 20121111200122 is 22100211112102.

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

It is a super-2 number, since 2×20121111200122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20121111200096 and 20121111200105.

It is not an unprimeable number, because it can be changed into a prime (20121111200123) 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, 264751463122 + ... + 264751463197.

It is an arithmetic number, because the mean of its divisors is an integer number (3971271947400).

Almost surely, 2^{20121111200122} is an apocalyptic number.

20121111200122 is a deficient number, since it is larger than the sum of its proper divisors (11649064379078).

20121111200122 is a wasteful number, since it uses less digits than its factorization.

20121111200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529502926340.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20121111200122 its reverse (22100211112102), we get a palindrome (42221322312224).

The spelling of 20121111200122 in words is "twenty trillion, one hundred twenty-one billion, one hundred eleven million, two hundred thousand, one hundred twenty-two".